| Feature Name | prBoom | csDoom | ZDoom | Vavoom | Legacy Doom |
| Loading Saved Games |  -loadgame [0-7] |
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| Skill level | -skill [1-5] |
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| Doom Options |
-respawn -fast -nomonsters -deathmatch (no longer used) |
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| Network game | -net hostname[:port]
(Server)
-port (local port to contact server on) |
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| Demo options |
-record [demofile] -timedemo [demofile] -fastdemo [demofile] |
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| Compatabiliy mode | -complevel
[lvl] |
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| Hardware options |
-nosound -nosfx -nomusic -nojoy |
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| Debugging Options |
-noaccel (X acceleration) -devparm (id debugging mode) -debugfile [debug_file] -noblit -nodrawers |
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| Port Config | -config [myconfig] |
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| Saving Games | -save [savedir] |
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| Screensize | [-width -height]
-or-
-{1,2,3} (Double/Triple size screen) |
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| WAD options | -iwad [iwad_name]
-file [pwad_name] |
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