Stupid! Only "Karate" mode playable. "Zen Warrior" requires IAP!

I cant tell much about the game itself, as there is only the "Karate" mode available and thats a pretty much boring side view fighting mode.

I CANT HELP BUT IT SEEMS OUTRIGHT STUPID TO ME, TO OFFER A FREE EDITION IN WHICH YOU CANT TRY THE MAIN GAME MODE. HOW WOULD I BE ABLE TO DECIDE, IF I WANTED TO PURCHASE THE FULL GAME? I WOULDNT AND THAT MEANS I WONT BUY IT!

Hundertneunzehn about Zen Warrior, v1.22