[quote name='AngstOverlord']... How would it possibly harm you to play them if you're paying absolutely nothing? Jimmeny Christmas, Batman!
It's not particularly worth the effort to get the TG-16 version up and running (especially if one had MAME?), but the second game is quite a fun little diversion. The third title is interesting if you have more patience and want to see some screwed-up bosses. The second level boss is... different.
The FC/NES version's just cute because it's blatant parody. If I had a reliable way to play it on my setup, I'd actually own it.
I have the JP HU-card version of the first game and US Genesis cartridges of 2 and 3. Thusly, I would say they're worthwhile, but I am a crazy person.
The first game isn't as vital to look up except for morbid curiousity alone. The controls suck (they DO), the stages are just kinda weird and it was obviously meant to sell on the whole zombie-squishy-disgusting factor. Plus Rick looks like he's running around in blue PJs. There was more effort expelled in creating the other two canon games.[/quote]
Notice, I said time and money. I don't want to waste time looking for the Emulators, Roms, and all that jazz; just to find out how crappy they are.