Doom Demo Size

• Doom Demo Switch
• Doom Demo Sizer

Action Doom 2 - Urban BrawlAdventures of Square, The - Episodes 1 & 2 (v2.1)Blasphemer (v0.1.5)Chex QuestChex Quest 2Chex Quest 3 (v1.4)DelaweareDoom. The size of an uncompressed single-player demo lump is 140 bytes per second (or 4 bytes per tic) plus a few (8 or 14) bytes of overhead. Back then, it would certainly have been nearly impossible to distribute demos as video captures due to their large size.

Game information

Play this game online

You can play DOOM on this website so you don't need to download and install the game on your computer. We recommend to use Google Chrome when playing DOS games online.

Download from this site

Doom Demo Switch

Download full version

You can download the full version of DOOM from the download store listed below.

If you buy a game you don't only get the full version game, you also support DOS Games Archive. For every sale we receive a small fee from the download store which helps us to keep this free website alive. Thank you and have fun!

Instruction/comment

The shareware version contains the entire first episode of the game, Knee-Deep in the Dead.

NOTE: This game has a native Windows version but it is recommended to use a third-party source port (see the links section below).

Screenshots

Description (by id Software)

You're a space marine armed with a mere pistol. Your mission is to locate more substantial firepower, blow your way through an onslaught of undead marines and mutant demons from hell, and navigate yourself off a radioactive moon base. In order to survive, not only do you have to make it through the first 27 blood-splattered levels of Doom, you also have to get through nine more incredibly tough expert levels in the all-new episode 'Thy Flesh Consumed.'

Cheats (by VGTips.com)

Download from this site

Doom Demo Switch

Download full version

You can download the full version of DOOM from the download store listed below.

If you buy a game you don't only get the full version game, you also support DOS Games Archive. For every sale we receive a small fee from the download store which helps us to keep this free website alive. Thank you and have fun!

Instruction/comment

The shareware version contains the entire first episode of the game, Knee-Deep in the Dead.

NOTE: This game has a native Windows version but it is recommended to use a third-party source port (see the links section below).

Screenshots

Description (by id Software)

You're a space marine armed with a mere pistol. Your mission is to locate more substantial firepower, blow your way through an onslaught of undead marines and mutant demons from hell, and navigate yourself off a radioactive moon base. In order to survive, not only do you have to make it through the first 27 blood-splattered levels of Doom, you also have to get through nine more incredibly tough expert levels in the all-new episode 'Thy Flesh Consumed.'

Cheats (by VGTips.com)

Doom Demo Sizer

Type in these codes one letter at a time during the game to cheat:

IDBEHOLD then A gives you the area map
IDBEHOLD then I makes you invisible
IDBEHOLD then L gives you the nightvision goggles
IDBEHOLD then R gives you radiation suit
IDBEHOLD then S turns on berserker
IDBEHOLD then V makes you invincible
IDCHOPPERS gives you the Chainsaw!
IDCLEV##: level warp (first # is episode 1-3, second # is level 1-9)
IDDQD: toggle God mode
IDDT: shows entire map (type while in map view), type again to show monsters/items, a third time goes back to normal
IDKFA: gives you all weapons, keys and ammo
IDMYPOS: gives your coordinates (x,y)
IDSPISPOPD: turns clipping off (walk through walls)

Game links

• Roland SC-55 Music Packs (HQ music for source ports) tip
• The Adventures of Square (Doom engine game)
• Chocolate Doom (Doom engine cross-platform port) tip
• Roland ED SC-D70 Music Packs (HQ music for source ports) tip
• Doomworldtip
• Crispy Doom (cross-platform Doom port) tip

Rating

What do you think of this game? Please rate it below on a scale of 1 to 10, where 1 is the lowest and 10 is the highest score.

A demo, short for demonstration, is a recording of settings and in-game commands allowing to reconstitute a playthrough with perfect accuracy. The demo format, however, is very susceptible to engine or level changes. For this reason, ZDoom does not offer backward demo compatibility: if a demo was recorded with too old a version of ZDoom, the program will tell you it cannot play it back.

ZDoom is also not compatible with the vanilla Doom demo format and will therefore not play the demo loop from the various supported IWADs. Because of the lack of backward demo compatibility, it is not advised to put built-in demo lumps in a ZDoom mod, as they risk getting obsoleted. Instead, a scripted TITLEMAP can be used.

The chasedemo console variable can be used to watch demos in chasecam mode.

Portable backup storage. The ZDoom demo format is based on the Interchange File Format. It contains a FORM chunk of type ZDEM. It is then followed by several chunks, which can be of the following types:

• ZDHD: ZDoom demo header. Contains engine version, map label, and random number generator seed.
• VARS: Variables. Stores the state of the demo-critical console variables.
• UINF: User information. Contains data about each of the players recorded in the demo.
• NETD: Net demo. Contains no info, but its presence flags the demo as being multiplayer.
• WEAP: Weapons. Contains the list of weapons available in-game during the demo and which slot they use.
• BODY: Body. Contains the bulk of the demo: the commands issued each tic by each player. This chunk may be compressed with zlib.
• COMP: Compression. Contains the total size of the BODY chunk data when uncompressed.

Critical console variables

Demo-critical console variables are those that have either the CVAR_DEMOSAVE flag or the CVAR_SERVERINFO flag. They include:

Currently, the VARS chunk can store up to 32 console variables. Reformat wd elements.