'malloc() in I_InitNetwork() failed' was added.

Could load doomr.wad (commercial mode, what would become DOOM2.WAD).

Id Software stated that these releases were unauthorized, possibly because these executables had partial support for Doom II, which was being developed at the time. There are two known variants of this version: first level and second level betas.

Network play no longer locks up when using a sound card.

Switches and platforms work when reloading from a saved game.

Fix for the broadcast packet bug which caused many networks to suffer decreases in performance.

D_INTROA added to IWAD, used instead of D_INTRO for OPL playback.

'I_StartupSound: forking sound daemon.' in 1.1 was changed to 'I_StartupSound: Hope you hear a pop.'.

'CENTER the joystick and press button 1:' was added changes to other joystick messages were also made.

The '-left' and '-right' network options no longer function.

Gamma correction mode was expanded to include five settings (0-4).

Mouse and joystick can be used in the menus.

This release saw the network code split into external ' drivers', providing a modular network system.

The command line parameters -send and -receive were added.

Many more, including capitalization, spelling corrections, and additional error messages.

The 'This version is NOT SHAREWARE, do not distribute!' text was added, to be shown with the registered version.

At the text screen of Knee-Deep in the Dead, 'buy' is changed to 'play' in the final sentence.

A more stable version of the DOS extender (DOS/4GW).

First appearance of gamma correction, which is either on or off.

It is possible to play the 1.1 registered IWAD with this version, one must rename this wad to 'doom1.wad', it also mentions that this is the 'commercial version' in the startup screen, rather than registered.

The BFG9000 fires many plasma gun shots in a wide field in front of the player.

The plasma gun fires red as well as green shots.

Functionally is fairly close to the commercial release.

Press release beta Main article: Doom press release beta

The player has a rifle bayonet for melee attacks.

The inactive monsters will disappear when shot.

Keys and bonus (point scoring) items are present.

Health kits will heal the player, but use graphics from Wolfenstein 3D.

Various items are present and can be picked up.

The player can be harmed by damaging floors.

Thirteen levels are present, including a version of MAP10: Refueling Base.

Includes eleven levels, various ones of which are recognizable in an early stage of design.

Commands to alter certain level properties such as lighting.

Non-interactive status interface that resembles a helmet interior.

Monsters ( Imp, Demon, and Baron of Hell) are inactive.

One level, a flat level with non-orthogonal texture-mapped walls, is present.

Doom 2 release date