Overused Game Clich?s.

[TheDarkChief]

One of your friends was or will be evil.

[Ares300]

You can almost always chit-chat during battle, and your opponents remain motionless until your ready.

[Jono2]

some villain in the game at some point or another, is either your brother, sister, or father.

you cannot die from an endless abyss; you instantly respawn at the last door you entered.

[jnfs2014]

The main boss is almost unbeatable without the ultimate weapon.

[Totla]

That if the main bad guy has a bunch of monsters/people under his control, why doesn't he just send them all at the "chosen one" and kill him, since he's the only one that can stop them.

Any why don't they just make the dungeon's unwinnable, so the hero can't do anything.

[Rudo]

Princesses. Lots of them.

And oversexied chicks.

[SkyMyl]

You won't die if you fall down a bottomless chasm.
You're the last hope for the world, your village, the universe, and all that jazz. But you still have to pay full price for that armor, regardless of how important you are.
Saving the princess.
The main character usually carries around a BFG or a BFS.
Deadly Useless Character (Don't ask.)

I just remembered these now.

[Mystic]

Mario: No matter how tough they are, 3 hits will kill the boss.

[Java]

I always find there to be a "haunted" level in a lot of games, along with some other types.

[Wizardorlan]

The cool, reserved man is always the father of the skinny, whiny white kid.

[Jono2]

The main boss is almost unbeatable without the ultimate weapon.

lol, fable
lol, ToS

[Qsmash]

Collect all of these thingies and something will happen.

[metroidhunter777]

If it's a Mario RPG, you automatically know you will collect something related to stars and if it's Paper Mario, 7 of them (Super Paper Mario only gets the 7 rule, stars doesn't apply).

[Lotos]

You and rival/main enemy team up.

Sonic
Mario
Pokemon
Crash Bandicoot
Kirby
Just to name a few

[Allegretto]

Always has to get a amazing powerful weapon to win the game.