Metagaming’s The Fantasy Trip is one of my favorite games of all time. It’s one of the core products that drew me inexorably into the gaming world. Here’s a page with a great number of resources for The Fantasy Trip.
Seven Hex Dragon has some free pdf character sheets for The Fantasy Trip.
The Fantasy Trip Third Dimension is a set of rules modifications for The Fantasy Trip / Melee / Wizard that allows you to use Heroscape sets instead of cardboard counters. The three dimensions create some issues, but these solve them. You’ll need The Fantasy Trip to play, but if you don’t have a copy, you can make do with Legends, which is free from Dark City Games.
Melee and Wizard is a set of rules modifications to allow you to use The Fantasy Trip / Melee / Wizard for mass combat.
Legends of Time and Space is Dark City Games’ rules set for tactical science fiction role playing. It’s based on the well-loved, out-of-print Fantasy Trip system.