Many of the crappy games had a ton of potential but were limited by either stupid.incompetant programmers, low budgets, or general laziness. So, here's my list of the worst, coupled with the reasons:
-Impossamole: Anyone who overlooks the potential of this game is retarded, but the execution was just BROKEN ALL TO HELL. Whoever coded this game deserves to be strung up by his EYEBROWS and beaten to death TWICE. Awesome potential here but dammit...someone ruined it like mad.
-Golden Axe: One of the most famous arcade games of all time got the shaft bigtime by both bad programmers and terrible artists. Great cinemas, but the game itself looks like it was an Atari 2600 port, and that's being generous. The gameplay sucks major balls too.
-Night Creatures: This game has sooooooo much potential, only to be ruined by bad gameplay execution and some of the most boring level designs I've ever seen.
There are probably others but oh well...I think that sums up the top 3. Now for some that are often seen as bad but I don't agree...
-Camp California: This game suffers from some control issues (mainly platforming) with one character...and of course, it has to be the character you start out with, Byron. Every other character works correctly. The game is often overlooked or dismissed because of its HIGH level of cheese, its overall difficulty level, and the fact that it starts out somewhat broken. But if you can get past the broken part (just pick up another character and never use Byron again!), the game is very fun and delivers a great little message at the same time...recycling is good!
-China Warrior: This game is definately odd. What turns most people off to it is the fact that the boss fights are very strangely coded and nothing at all like the fluid fighting games we had in the 90s. It is a relatively hard game that only gets harder as you replay it, and the final boss is the ultimate in cheap-ass.
-The Addams Family: Okay...first of all, people dock points off of this one for being a US-only release, which is prejudice and complete bullshit. This game had TONS of potential, and used a great deal of interesting programming tricks that make any up-and-coming PCE programmer drool. This is one of the more unique games available, although it does suffer from some subpar graphics (sprites are rather poor, although the backgrounds are very well-detailed) and a few gameplay glitches (especially with the sword). Great potential but could have been more...I think it was just limited by the tiny 64k of memory...an SCD version of this would have rocked.