+(let ((frame 0.0) (fps (make-timer)) (update (make-timer)))
+ (start-timer update)
+ (start-timer fps)
+ (run-game "Gacela Tetris"
+ (tetramine)
+ (incf frame)
+ (cond ((> (get-time update) 1000) (print (/ frame (/ (get-time fps) 1000.0))) (start-timer update)))))