Madness Interactive

Madness Interactive is a game from 2003, a game made to simulate Madness: 2.
Challenges
There are a set of four challenges. Each challenge may unlock cheats if a high enough score is gained.
Matrix
The player starts with no weapons and is attacked constantly by Smith agents.
Zombies
The player has no weapons but shotguns spawn on the ground. The player must defeat regular enemies. When Jesus is overhead, all enemies become zombies, and when the player kills Jesus, the zombies turn back into regular enemies.
Knifing Around
The player stands at the opposite side of the screen to a dummy and is given unlimited knives. The player must throw as many knives at the dummy as possible in one minute. For every knife that sticks to the dummy, the player gets a point. For every knife that either bounces off the dummy or misses the dummy entirely, the player loses a point. The player cannot move.
Lasers
Pistols spawn on the ground as the player, with a jetpack, has to avoid or destroy the lasers which spawn randomly on the level borders.
Experiment Mode
The player enters a blank arena and can spawn weapons and enemies to fight at choice. The player can also toggle autospawn, which automatically spawns a new enemy every 3 seconds. Invincibility can also be enabled.
Options
There are many options provided at the main menu:
Controls
Provides the option to change the controls for:
Right (default D)
Left (default A)
Down (default S)
Jump (default W)
Drop (default F)
Use (default Shift)
Bullet-time (default Q)
Switch gun (default E)
Pause (default P)
Quit (default Enter)