Screen settings:
- uncapped framerate (from Crispy DOOM)
- two new screen wipe types (crossfade and burn) / (from DOOM Legacy / ZDOOM)
- take screenshots (PNG or PCX format)
- translucency (from Crispy DOOM)
Sound settings:
- add OPL3 support (music)
- add Timidity support (music)
- add PC speaker support (sound)
- playback for up to 16 sound channels
- switch between left / right sound output
- add sound pitch from v1.1
System settings:
- add hall of mirrors detector (from SMMU)
- replace missing textures (don't crash the game) / (from SMMU)
Game settings:
- automap overlay (from Crispy DOOM)
- automap author's (but not for PWAD) / (from DOOMretro)
- weapon recoil (Y-axis) / (from Strife Veteran Edition)
- player thrust when firing guns (Z-axis) / (from DOOMretro)
- respawn monsters (from ZDOOM)
- fast monsters (from ZDOOM)
- no monsters (from ZDOOM)
- new fullscreen hud (from DOOMretro)
- foot clipping inside liquids (from Heretic)
- liquid splashes (from Heretic)
- footsteps (uses sounds from QUAKE 2)
- swirling liquids (from SMMU)
- animated liquid sectors (from DOOMretro)
- emulated Pre-Release Beta mode (with sprites)
- flip corpses and guns randomly upon killing monsters
- show "secret revealed" message (from Crispy DOOM)
- rocket trails (from DOOMretro)
- variable chaingun firing speed
- falling damage (from ZDOOM)
- infinite ammo (from ZDOOM)
- autoaim
- more blood and gore (from Strife Veteran Edition)
- variable gore amount
- colored blood for Cacodemons, Baron's of Hell, Hell Knight's (from Crispy DOOM)
- fix colored blood for Spectres ("invisible" blood) and Lost-Souls (bleed puffs) / (from Crispy DOOM)
- monsters can telefrag on map 30 (from PrBoom+)
- monsters can get stuck on doortracks (from PrBoom+)
- Arch-Vile can resurrect ghosts (from PrBoom+)
- remove Pain-Elemental's Lost-Soul limit (from PrBoom+)
- blazing doors don't do doubled closing sound (from PrBoom+)
- God mode isn't absolute (from PrBoom+)
- use DOOM's floor motion behavior (from PrBoom+)
- use DOOM's clipping mode (from PrBoom+)
- use DOOM's linedef trigger model (from PrBoom+)
- pre-Ultimate boss death (from PrBoom+)
- Lost-Souls can bounce off flats (from PrBoom+)
- two-sided middle textures don't animate (from PrBoom+)
- retain quirks in DOOM sound code (from PrBoom+)
- use DOOM's buggy ouch face (from PrBoom+)
Cheats:
- add flying possibility (from Heretic)
Overall:
- removed limits for VISPLANES, PLATS, VISSPRITES, ANIMS and a few more (will prevent crashing in most cases)
- completely new game console (no input, only scrolling) / (from DOOMretro)
- shade menu background (from Crispy DOOM)
- draw menu more efficient (no more menu sprites)
- demo playback progress bar (from Crispy DOOM)
...and maybe some more features like demo recording, as well as alternative memory handling and memory statistics from BOOM. But those are and will most likely be available for debug mode only. There also is a sixth "options" setting which isn't visible for my public releases but it is during development: "Debug Settings". It's not useful during normal gameplay.