ZDoom

Yes, the problem is in the force cube, the same happened on MAP03 (Wormhole) in TNT. Is there a way to deactivate the cube?

Alpha 8.1, the latest SVN GZDOOM build. DOOM2 MAP10 (Refueling Base). I triggered the exit with Pentagram of Protection (the black one) and Force Cube simultaneously, then upon entering the next map GZDOOM reliably crashed before autosaving. If both powerups expire before triggering the exit, no ...

Still the same in 4.15pre303, in my case the only way to make all tracks load correctly was to convert them to Ogg Vorbis.

Even more, rocket jumping can be used for other shortcuts, e. g. reaching the secret exit in Arid Abode or taking the first Big Coin in Pyro Pyramid.

Was that archvile performing an attack on a monster at that moment? Archviles immediately switch target if damaged during the attack, this behavior can be a consequence.

Recently I found a HUGE shortcut in Venom Villa. Right at the beginning, stand near the left side of the main building, face away from its wall, look straight down, press "5" and perform a careful rocket jump backwards, as high as possible, continuously pressing back. If everything is done correctly ...

A question on the card "Spiderdemon hurts if you look at it for a long time". It sucks health, but not armor. Is this intentional?

If an arch-vile resurrects a dead assassin monster, the resurrected monster does not obtain assassin properties. Is it by design?

Does this mod work with Heretic, Hexen or Strife? Other Doom-based games, like Hacx, Chex Quest or Harmony?

A suggestion on all cards that make monsters fire random projectiles. Use all projectile types EXCEPT (!) cyberdemon rockets. These rockets can easily make levels unbeatable.

What card makes cacoes immediately fly up to the ceiling, like balloons?

That's what Grace of Lilith does. Its working as intended

But why does it display "non-ZDOOM detected"? I am using GZDOOM 4.11 pre-release version.

"Cacodemon projectiles are partially invisible": yes, they are almost invisible, but still light up nearby flats. Why?

I got this card again, it's "Grace of Lilith", now its name is visible.
It displays:
INDEX ENTRY637:CHANGES MANYNFDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
NON-ZDOOM DETECTED. PLEASE START IN REGULAR ZDOOM (three times)
WHOAMI
TIER: 5

One more strange bug. DOOM II, MAP18 (Courtyard). I took a card that randomly gives demons various properties (makes them big, fast etc.), but I got garbage instead of its name and description. Random characters, then something like "please use original ZDOOM" three or four times, then random ...