In Mario, you can use ← to move left, → to move right, ↑ to jump, ↑← to left jump, ↑→ to right jump and `z` to attack. In Doom, you can use ← to move left, → to move right, ↑ to move forward, ↓ to move backward, ↑← to turn left, ↑→ to turn right, `z` to attack and `x` to interact with doors and mechanisms.