A collection including four Physics Models by me:

"Bob Slaughter for Infinity"

"Bob Slaughter for Evil"

"S'pht Rebellion 3 for Infinity"

"Pfhor Rebellion 2 for Evil"

and a version of David Gordon's "Descent Physics":

"Descent 2 for Infinity"

Plus, 13 altered maps (Readme files included) by various authors (none by me) to play around with.

"Cyborg Canyon of Death.map"

"Cyborg Madness for Infinity.sce2"

"Hunter Canyon of Death.map"

"Hunter Madness for Evil.sce2"