My church used to have a table-top style arcade machine. The screen faced the ceiling, and the controls were on either side. You played a caveman who had to climb to the top of the level to catch a teradactyl-like creature to continue, collecting eggs and other pickups on the way. I want to say the game was named after that creature. It had a very ice-climbers like feel to it. Does anybody remember that game? Any help is greatly appreciated.