Custom Team Fortress is a modification of Team Fortress 2.5 by TFS (now Valve Software). In the original Team Fortress, there were 9 classes: scout, sniper, soldier, demoman, medic, hwguy, pyro, spy and engineer. CustomTF (or cutf) allows you to create your own class based on the items, weapons and attrubites of the 9 classes, plus additional features. Unlike most Quake I MODs, CustomTF makes heavy reuse of MDLs that people already have thus eliminating lengthly downloads. In CustomTF you make your own classes on the fly. Ever wanted to be an engineer that could also lay pipebomb traps, or a sniper that had a rocket launcher for a backup weapon? Or a scout with the ability to defend himself... with an assault cannon? You can do it here. CustomTF adds elements from roleplaying games, allowing you to inspire teammates with auras in combat, hide in shadows, summon demons and more - all with the balance of gameplay and teamwork heavily encouraged. A new kind of sentry exists: the Tesla Sentry....
WTF is a tesla coil doing in this game