SP2D means Singleplayer in 2D. This is a singleplayer mod for UT99 with a side view of game world. You can see the game world from the side. There are also side doors to make levels more non-linear. You can enter it by pressing a key (corresponding binding will appear in Unreal Tournament key bindigs). You'll have all usual UT weapons (some of them are slightly modified) and may be I'll use some of classic Unreal weapons too. You can aim your crosshair up and down with a mouse. The game will take part in polar regions of Na Pali after Unreal and Unreal:Return to Na Pali events. Some kind of relative peace was established on most part of planet. Skaarj fleet was defeated and now planet is under protection of human military forces. Andrew Collins was sent to patrol some polar regions of Na Pali and after return he had found his base destroyed by Skaarj dropship. He can't send a message to the headquarters because of planet's sun activity which causes radio disturbances....