diff --git a/engine/client/console.c b/engine/client/console.c
index 6ae84e16..78c0a81f 100644
--- a/engine/client/console.c
+++ b/engine/client/console.c
@@ -2043,8 +2043,8 @@ void Con_DrawDebug( void )
 
 	if( scr_download->value != -1.0f )
 	{
-		Q_snprintf( dlstring, sizeof( dlstring ), "Downloading [%d remaining]: ^2%s^7 %5.1f%%",
-		host.downloadcount, host.downloadfile, scr_download->value, Sys_DoubleTime() - timeStart ); 
+		Q_snprintf( dlstring, sizeof( dlstring ), "Downloading [%d remaining]: ^2%s^7 %5.1f%% (%f elapsed)",
+			host.downloadcount, host.downloadfile, scr_download->value, Sys_DoubleTime() - timeStart );
 		x = glState.width - 400;
 		y = con.curFont->charHeight * 1.05f;
 		Con_DrawString( x, y, dlstring, g_color_table[7] );
@@ -2199,7 +2199,7 @@ void Con_DrawSolidConsole( int lines )
 
 		memcpy( color, g_color_table[7], sizeof( color ));
 
-		Q_snprintf( curbuild, MAX_STRING, "Xash3D %i/%g (hw build %i)", PROTOCOL_VERSION, XASH_VERSION, Q_buildnum( ));
+		Q_snprintf( curbuild, MAX_STRING, "%s %i/%s (hw build %i)", XASH_ENGINE_NAME, PROTOCOL_VERSION, XASH_VERSION, Q_buildnum( ));
 		Con_DrawStringLen( curbuild, &stringLen, &charH );
 		start = glState.width - stringLen;
 		stringLen = Con_StringLength( curbuild );
@@ -2349,8 +2349,8 @@ void Con_DrawVersion( void )
 	}
 
 	if( host.force_draw_version || draw_version )
-		Q_snprintf( curbuild, MAX_STRING, "Xash3D v%i/%g (build %i)", PROTOCOL_VERSION, XASH_VERSION, Q_buildnum( ));
-	else Q_snprintf( curbuild, MAX_STRING, "v%i/%g (build %i)", PROTOCOL_VERSION, XASH_VERSION, Q_buildnum( )); 
+		Q_snprintf( curbuild, MAX_STRING, "%s v%i/%s (build %i)", XASH_ENGINE_NAME, PROTOCOL_VERSION, XASH_VERSION, Q_buildnum( ));
+	else Q_snprintf( curbuild, MAX_STRING, "v%i/%s (build %i)", PROTOCOL_VERSION, XASH_VERSION, Q_buildnum( ));
 	Con_DrawStringLen( curbuild, &stringLen, &charH );
 	start = glState.width - stringLen * 1.05f;
 	stringLen = Con_StringLength( curbuild );
diff --git a/engine/client/vid_common.c b/engine/client/vid_common.c
index 3a3c1aed..5553c745 100644
--- a/engine/client/vid_common.c
+++ b/engine/client/vid_common.c
@@ -20,7 +20,7 @@ GNU General Public License for more details.
 #include "input.h"
 #include "vid_common.h"
 
-#define WINDOW_NAME			"Xash3D Window" // Half-Life
+#define WINDOW_NAME			XASH_ENGINE_NAME " Window" // Half-Life
 
 convar_t	*gl_extensions;
 convar_t	*gl_texture_anisotropy;
diff --git a/engine/common/build.c b/engine/common/build.c
index b7f5df34..89af30aa 100644
--- a/engine/common/build.c
+++ b/engine/common/build.c
@@ -50,4 +50,92 @@ int Q_buildnum( void )
 #else
 	return 3847;
 #endif
-}
\ No newline at end of file
+}
+
+/*
+============
+Q_buildos
+
+Returns current name of operating system. Without any spaces.
+============
+*/
+const char *Q_buildos( void )
+{
+	const char *osname;
+
+#if defined(_WIN32) && defined(_MSC_VER)
+	osname = "Win32";
+#elif defined(_WIN32) && defined(__MINGW32__)
+	osname = "Win32-MinGW";
+#elif defined(__ANDROID__)
+	osname = "Android";
+#elif defined(__linux__)
+	osname = "Linux";
+#elif defined(__APPLE__)
+	osname = "Apple";
+#elif defined(__FreeBSD__)
+	osname = "FreeBSD";
+#elif defined(__NetBSD__)
+	osname = "NetBSD";
+#elif defined(__OpenBSD__)
+	osname = "OpenBSD";
+#elif defined __EMSCRIPTEN__
+	osname = "Emscripten";
+#else
+#error "Place your operating system name here! If this is a mistake, try to fix conditions above and report a bug"
+#endif
+
+	return osname;
+}
+
+/*
+============
+Q_buildos
+
+Returns current name of operating system. Without any spaces.
+============
+*/
+const char *Q_buildarch( void )
+{
+	const char *archname;
+
+#if defined( __x86_64__) || defined(_M_X64)
+	archname = "amd64";
+#elif defined(__i386__) || defined(_X86_) || defined(_M_IX86)
+	archname = "i386";
+#elif defined __aarch64__
+	archname = "aarch64";
+#elif defined __arm__ || defined _M_ARM
+	archname = "arm";
+#elif defined __mips__
+	archname = "mips";
+#elif defined __EMSCRIPTEN__
+	archname = "javascript";
+#else
+#error "Place your architecture name here! If this is a mistake, try to fix conditions above and report a bug"
+#endif
+
+	return archname;
+}
+
+/*
+=============
+Q_buildcommit
+
+Returns a short hash of current commit in VCS as string.
+XASH_BUILD_COMMIT must be passed in quotes
+
+if XASH_BUILD_COMMIT is not defined,
+Q_buildcommit will identify this build as release or "notset"
+=============
+*/
+const char *Q_buildcommit( void )
+{
+#ifdef XASH_BUILD_COMMIT
+	return XASH_BUILD_COMMIT;
+#elif defined(XASH_RELEASE) // don't check it elsewhere to avoid random bugs
+	return "release";
+#else
+	return "notset";
+#endif
+}
diff --git a/engine/common/com_strings.h b/engine/common/com_strings.h
index cb37bb3e..8f0b82f6 100644
--- a/engine/common/com_strings.h
+++ b/engine/common/com_strings.h
@@ -59,4 +59,6 @@ GNU General Public License for more details.
 
 #define DEFAULT_UPDATE_PAGE "https://github.com/FWGS/xash3d-fwgs/releases/latest"
 
+#define XASH_ENGINE_NAME "Xash3D FWGS"
+
 #endif//COM_STRINGS_H
diff --git a/engine/common/common.h b/engine/common/common.h
index db26b443..4e29918e 100644
--- a/engine/common/common.h
+++ b/engine/common/common.h
@@ -168,7 +168,7 @@ typedef enum
 #include "cvar.h"
 #include "con_nprint.h"
 
-#define XASH_VERSION	0.99f		// engine current version
+#define XASH_VERSION	"0.99"		// engine current version
 
 // PERFORMANCE INFO
 #define MIN_FPS         	20.0		// host minimum fps value for maxfps.
@@ -539,7 +539,7 @@ long FS_Read( file_t *file, void *buffer, size_t buffersize );
 int FS_VPrintf( file_t *file, const char *format, va_list ap );
 int FS_Seek( file_t *file, long offset, int whence );
 int FS_Gets( file_t *file, byte *string, size_t bufsize );
-int FS_Printf( file_t *file, const char *format, ... );
+int FS_Printf( file_t *file, const char *format, ... ) _format( 2 );
 long FS_FileSize( const char *filename, qboolean gamedironly );
 long FS_FileTime( const char *filename, qboolean gamedironly );
 int FS_Print( file_t *file, const char *msg );
@@ -775,6 +775,10 @@ uint Sound_GetApproxWavePlayLen( const char *filepath );
 // build.c
 //
 int Q_buildnum( void );
+const char *Q_buildos( void );
+const char *Q_buildarch( void );
+const char *Q_buildcommit( void );
+
 
 //
 // host.c
@@ -782,7 +786,7 @@ int Q_buildnum( void );
 void EXPORT Host_Shutdown( void );
 int Host_CompareFileTime( long ft1, long ft2 );
 void Host_NewInstance( const char *name, const char *finalmsg );
-void Host_EndGame( qboolean abort, const char *message, ... );
+void Host_EndGame( qboolean abort, const char *message, ... ) _format( 2 );
 void Host_AbortCurrentFrame( void );
 void Host_WriteServerConfig( const char *name );
 void Host_WriteOpenGLConfig( void );
@@ -791,7 +795,7 @@ void Host_WriteConfig( void );
 qboolean Host_IsLocalGame( void );
 qboolean Host_IsLocalClient( void );
 void Host_ShutdownServer( void );
-void Host_Error( const char *error, ... );
+void Host_Error( const char *error, ... ) _format( 1 );
 void Host_PrintEngineFeatures( void );
 void Host_Frame( float time );
 void Host_InitDecals( void );
@@ -855,9 +859,9 @@ void pfnGetGameDir( char *szGetGameDir );
 int pfnDecalIndex( const char *m );
 int pfnGetModelType( model_t *mod );
 int pfnIsMapValid( char *filename );
-void Con_Reportf( char *szFmt, ... );
-void Con_DPrintf( char *fmt, ... );
-void Con_Printf( char *szFmt, ... );
+void Con_Reportf( char *szFmt, ... ) _format( 1 );
+void Con_DPrintf( char *fmt, ... ) _format( 1 );
+void Con_Printf( char *szFmt, ... ) _format( 1 );
 int pfnNumberOfEntities( void );
 int pfnIsInGame( void );
 float pfnTime( void );
@@ -975,11 +979,11 @@ struct pmtrace_s *PM_TraceLine( float *start, float *end, int flags, int usehull
 void SV_StartSound( edict_t *ent, int chan, const char *sample, float vol, float attn, int flags, int pitch );
 void SV_StartMusic( const char *curtrack, const char *looptrack, long position );
 void SV_CreateDecal( sizebuf_t *msg, const float *origin, int decalIndex, int entityIndex, int modelIndex, int flags, float scale );
-void Log_Printf( const char *fmt, ... );
+void Log_Printf( const char *fmt, ... ) _format( 1 );
 struct sizebuf_s *SV_GetReliableDatagram( void );
-void SV_BroadcastCommand( const char *fmt, ... );
+void SV_BroadcastCommand( const char *fmt, ... ) _format( 1 );
 qboolean SV_RestoreCustomDecal( struct decallist_s *entry, edict_t *pEdict, qboolean adjacent );
-void SV_BroadcastPrintf( sv_client_t *ignore, char *fmt, ... );
+void SV_BroadcastPrintf( sv_client_t *ignore, char *fmt, ... ) _format( 2 );
 int R_CreateDecalList( struct decallist_s *pList );
 void R_DecalRemoveAll( int texture );
 void R_ClearAllDecals( void );
@@ -987,7 +991,7 @@ void R_ClearStaticEntities( void );
 qboolean S_StreamGetCurrentState( char *currentTrack, char *loopTrack, int *position );
 struct cl_entity_s *CL_GetEntityByIndex( int index );
 struct player_info_s *CL_GetPlayerInfo( int playerIndex );
-void CL_ServerCommand( qboolean reliable, char *fmt, ... );
+void CL_ServerCommand( qboolean reliable, char *fmt, ... ) _format( 2 );
 void CL_HudMessage( const char *pMessage );
 const char *CL_MsgInfo( int cmd );
 void SV_DrawDebugTriangles( void );
@@ -1033,10 +1037,10 @@ long SCR_GetAudioChunk( char *rawdata, long length );
 wavdata_t *SCR_GetMovieInfo( void );
 void SCR_Shutdown( void );
 void Con_Print( const char *txt );
-void Con_NPrintf( int idx, char *fmt, ... );
-void Con_NXPrintf( con_nprint_t *info, char *fmt, ... );
-void UI_NPrintf( int idx, char *fmt, ... );
-void UI_NXPrintf( con_nprint_t *info, char *fmt, ... );
+void Con_NPrintf( int idx, char *fmt, ... ) _format( 2 );
+void Con_NXPrintf( con_nprint_t *info, char *fmt, ... ) _format( 2 );
+void UI_NPrintf( int idx, char *fmt, ... ) _format( 2 );
+void UI_NXPrintf( con_nprint_t *info, char *fmt, ... ) _format( 2 );
 char *Info_ValueForKey( const char *s, const char *key );
 void Info_RemovePrefixedKeys( char *start, char prefix );
 qboolean Info_RemoveKey( char *s, const char *key );
diff --git a/engine/common/crtlib.h b/engine/common/crtlib.h
index f622010c..6f28b3b6 100644
--- a/engine/common/crtlib.h
+++ b/engine/common/crtlib.h
@@ -16,6 +16,12 @@ GNU General Public License for more details.
 #ifndef STDLIB_H
 #define STDLIB_H
 
+#ifdef __GNUC__
+#define _format(x) __attribute__((format(printf, x, x+1)))
+#else
+#define _format(x)
+#endif
+
 // timestamp modes
 enum
 {
@@ -97,11 +103,11 @@ char *Q_stristr( const char *string, const char *string2 );
 char *Q_strstr( const char *string, const char *string2 );
 #define Q_vsprintf( buffer, format, args ) Q_vsnprintf( buffer, 99999, format, args )
 int Q_vsnprintf( char *buffer, size_t buffersize, const char *format, va_list args );
-int Q_snprintf( char *buffer, size_t buffersize, const char *format, ... );
-int Q_sprintf( char *buffer, const char *format, ... );
+int Q_snprintf( char *buffer, size_t buffersize, const char *format, ... ) _format( 3 );
+int Q_sprintf( char *buffer, const char *format, ... ) _format( 2 );
 #define Q_memprint( val ) Q_pretifymem( val, 2 )
 char *Q_pretifymem( float value, int digitsafterdecimal );
-char *va( const char *format, ... );
+char *va( const char *format, ... ) _format( 1 );
 
 //
 // zone.c
@@ -127,4 +133,4 @@ void Mem_PrintStats( void );
 #define Mem_IsAllocated( mem ) Mem_IsAllocatedExt( NULL, mem )
 #define Mem_Check() _Mem_Check( __FILE__, __LINE__ )
 	
-#endif//STDLIB_H
\ No newline at end of file
+#endif//STDLIB_H
diff --git a/engine/common/host.c b/engine/common/host.c
index 7169dd77..5baefccc 100644
--- a/engine/common/host.c
+++ b/engine/common/host.c
@@ -878,7 +878,7 @@ int EXPORT Host_Main( int argc, char **argv, const char *progname, int bChangeGa
 	host_limitlocal = Cvar_Get( "host_limitlocal", "0", 0, "apply cl_cmdrate and rate to loopback connection" );
 	con_gamemaps = Cvar_Get( "con_mapfilter", "1", FCVAR_ARCHIVE, "when true show only maps in game folder" );
 	build = Cvar_Get( "build", va( "%i", Q_buildnum()), FCVAR_READ_ONLY, "returns a current build number" );
-	ver = Cvar_Get( "ver", va( "%i/%g (hw build %i)", PROTOCOL_VERSION, XASH_VERSION, Q_buildnum()), FCVAR_READ_ONLY, "shows an engine version" );
+	ver = Cvar_Get( "ver", va( "%i/%s (hw build %i)", PROTOCOL_VERSION, XASH_VERSION, Q_buildnum()), FCVAR_READ_ONLY, "shows an engine version" );
 
 	Mod_Init();
 	NET_Init();
diff --git a/engine/common/netchan.h b/engine/common/netchan.h
index 6805ea45..7c5c5b73 100644
--- a/engine/common/netchan.h
+++ b/engine/common/netchan.h
@@ -23,6 +23,7 @@ GNU General Public License for more details.
 
 ==========================================================
 */
+#include "crtlib.h"
 #include "net_buffer.h"
 
 // 0 == regular, 1 == file stream
@@ -221,7 +222,7 @@ int Netchan_CreateFileFragments( netchan_t *chan, const char *filename );
 void Netchan_Transmit( netchan_t *chan, int lengthInBytes, byte *data );
 void Netchan_TransmitBits( netchan_t *chan, int lengthInBits, byte *data );
 void Netchan_OutOfBand( int net_socket, netadr_t adr, int length, byte *data );
-void Netchan_OutOfBandPrint( int net_socket, netadr_t adr, char *format, ... );
+void Netchan_OutOfBandPrint( int net_socket, netadr_t adr, char *format, ... ) _format( 3 );
 qboolean Netchan_Process( netchan_t *chan, sizebuf_t *msg );
 void Netchan_UpdateProgress( netchan_t *chan );
 qboolean Netchan_IncomingReady( netchan_t *chan );
@@ -231,4 +232,4 @@ void Netchan_ReportFlow( netchan_t *chan );
 void Netchan_FragSend( netchan_t *chan );
 void Netchan_Clear( netchan_t *chan );
 
-#endif//NET_MSG_H
\ No newline at end of file
+#endif//NET_MSG_H
diff --git a/engine/common/system.h b/engine/common/system.h
index 8c59eb5a..c8bb68a9 100644
--- a/engine/common/system.h
+++ b/engine/common/system.h
@@ -50,6 +50,7 @@ extern "C" {
 #include "xash3d_types.h"
 
 #include "const.h"
+#include "crtlib.h"
 
 #define ASSERT( exp )	if(!( exp )) Sys_Error( "assert failed at %s:%i\n", __FILE__, __LINE__ )
 
@@ -81,8 +82,8 @@ double Sys_DoubleTime( void );
 char *Sys_GetClipboardData( void );
 char *Sys_GetCurrentUser( void );
 int Sys_CheckParm( const char *parm );
-void Sys_Warn( const char *format, ... );
-void Sys_Error( const char *error, ... );
+void Sys_Warn( const char *format, ... ) _format( 1 );
+void Sys_Error( const char *error, ... ) _format( 1 );
 qboolean Sys_LoadLibrary( dll_info_t *dll );
 void* Sys_GetProcAddress( dll_info_t *dll, const char* name );
 qboolean Sys_FreeLibrary( dll_info_t *dll );
@@ -128,7 +129,7 @@ char *Wcon_Input( void );
 
 // text messages
 #define Msg	Con_Printf
-void MsgDev( int level, const char *pMsg, ... );
+void MsgDev( int level, const char *pMsg, ... ) _format( 2 );
 
 #ifdef __cplusplus
 }
diff --git a/engine/server/sv_game.c b/engine/server/sv_game.c
index 55ca5f6f..b3a01916 100644
--- a/engine/server/sv_game.c
+++ b/engine/server/sv_game.c
@@ -2134,7 +2134,7 @@ SV_StartMusic
 void SV_StartMusic( const char *curtrack, const char *looptrack, long position )
 {
 	MSG_BeginServerCmd( &sv.multicast, svc_stufftext );
-	MSG_WriteString( &sv.multicast, va( "music \"%s\" \"%s\" %i\n", curtrack, looptrack, position ));
+	MSG_WriteString( &sv.multicast, va( "music \"%s\" \"%s\" %li\n", curtrack, looptrack, position ));
 	SV_Multicast( MSG_ALL, NULL, NULL, false, false );
 }
 
@@ -2404,6 +2404,7 @@ pfnClientCommand
 
 =========
 */
+void pfnClientCommand( edict_t* pEdict, char* szFmt, ... ) _format( 2 );
 void pfnClientCommand( edict_t* pEdict, char* szFmt, ... )
 {
 	sv_client_t	*cl;
@@ -2834,6 +2835,7 @@ pfnAlertMessage
 
 =============
 */
+static void pfnAlertMessage( ALERT_TYPE type, char *szFmt, ... ) _format( 2 );
 static void pfnAlertMessage( ALERT_TYPE type, char *szFmt, ... )
 {
 	char	buffer[2048];
@@ -2887,6 +2889,7 @@ pfnEngineFprintf
 OBSOLETE, UNUSED
 =============
 */
+static void pfnEngineFprintf( FILE *pfile, char *szFmt, ... ) _format( 2 );
 static void pfnEngineFprintf( FILE *pfile, char *szFmt, ... )
 {
 }
diff --git a/engine/server/sv_log.c b/engine/server/sv_log.c
index f21d29f5..8c50e5a8 100644
--- a/engine/server/sv_log.c
+++ b/engine/server/sv_log.c
@@ -73,7 +73,7 @@ void Log_Open( void )
 	}
 
 	if( fp ) svs.log.file = fp;
-	Log_Printf( "Log file started (file \"%s\") (game \"%s\") (version \"%i/%.2f/%d\")\n",
+	Log_Printf( "Log file started (file \"%s\") (game \"%s\") (version \"%i/%s/%d\")\n",
 	szTestFile, Info_ValueForKey( SV_Serverinfo(), "*gamedir" ), PROTOCOL_VERSION, XASH_VERSION, Q_buildnum() );
 }
 
diff --git a/engine/server/sv_main.c b/engine/server/sv_main.c
index f0e5751b..e0e6e55b 100644
--- a/engine/server/sv_main.c
+++ b/engine/server/sv_main.c
@@ -739,7 +739,7 @@ void SV_AddToMaster( netadr_t from, sizebuf_t *msg )
 	Info_SetValueForKey( s, "os", "w", len ); // Windows
 	Info_SetValueForKey( s, "secure", "0", len ); // server anti-cheat
 	Info_SetValueForKey( s, "lan", "0", len ); // LAN servers doesn't send info to master
-	Info_SetValueForKey( s, "version", va( "%g", XASH_VERSION ), len ); // server region. 255 -- all regions
+	Info_SetValueForKey( s, "version", va( "%s", XASH_VERSION ), len ); // server region. 255 -- all regions
 	Info_SetValueForKey( s, "region", "255", len ); // server region. 255 -- all regions
 	Info_SetValueForKey( s, "product", GI->gamefolder, len ); // product? Where is the difference with gamedir?
 
@@ -853,7 +853,8 @@ void SV_Init( void )
 
 	MSG_Init( &net_message, "NetMessage", net_message_buffer, sizeof( net_message_buffer ));
 
-	Q_snprintf( versionString, sizeof( versionString ), "%s: %.2f,%i,%i", "Xash3D", XASH_VERSION, PROTOCOL_VERSION, Q_buildnum() );
+	Q_snprintf( versionString, sizeof( versionString ), "%s: %s-%s(%s-%s),%i,%i",
+		XASH_ENGINE_NAME, XASH_VERSION, Q_buildcommit(), Q_buildos(), Q_buildarch(), PROTOCOL_VERSION, Q_buildnum() );
 	Cvar_FullSet( "sv_version", versionString, FCVAR_READ_ONLY );
 
 	SV_ClearGameState ();	// delete all temporary *.hl files