.

[Chpexo]

.

[BlackDog61]

Weird Dreams (Atari)

[Lilinda]

It's spelled Seaman, btw.

[dougeff]

Any of the Katamari games are pretty odd.

[Sliver X]

Trio The Punch: Never Forget Me...

PuLiRuLa

Photograph Boy

Miss World Nude '96 (NSFW, obviously)

Dungeons of the Unforgiven

*edited for better links*

[Jorpho]

• Sonic Dreams Collection (PC) A totally real unreleased prototype collection from Sega

No, I'm pretty sure that's a spoof someone made up.
http://www.pcgamer.com/sonic-dreams-collection-is-todays-weird-internet-curio/

[SCD]

Bonk's Adventure (TurboGrafx-16)

DJ Boy (Arcade)

Faceball 2000 (Game Boy)

McDonald's Treasure Land Adventure (Sega Genesis)

Monster Party (NES)

Panic! (Sega CD)

Rakugakids (Nintendo 64)

Space Giraffe (Xbox 360)

Space Invaders '95: The Attack of the Lunar Loonies (Arcade)

Splatterhouse: Wanpaku Graffiti (NES)

Stretch Panic (Sony PlayStation 2)

Super Tempo (Sega Saturn)

The Ninja Kids (Arcade)

[Malias]

Panic! (Sega CD)
Earthworm Jim 2
Zombie Nation (NES)
Tempo (32X)

[magictrufflez]

Horai High probably takes the cake for me.  It is definitely...odd.

The newer The Bard's Tale is probably a close second---but that game is weird in a very good way.

[PresidentLeever]

The Manhole is pretty strange, sort of a Myst for kids but very directionless and sadly very short as well.

Also Gekisha Boy.

[Spooniest]

Let's not forget that the most recognizable game in the history of consoles is about a New York-based plumber who suddenly finds himself in a magical kingdom of talking mushroom people being oppressed by a sentient dragon-ox-turtle and his army of flying turtles, evil mushrooms and fireproof basketball-sized beetles.

Games are messed up, man.

[Bonesy]

can we expand this to weird video games in general, I've never had a dreamcast and illbleed is pretty weird

also most stuff by kenji eno like enemy zero

[Chpexo]

.

[xorxif]

You mean Donkey Kong 3?

Weirdest game I ever played (at length,) so far is ROM CHECK FAIL!

For more weirdness you can try Cactus Arcade, which is a collection of Game Maker games by this cactus guy. I really liked the "Illegal Communication" one.

http://cactusquid.com/games.htm

[STARWIN]

Inca II (PC)

[magictrufflez]

I know I probably shouldn't even acknowledge these exist, but I just randomly remembered all those...uh...not for kids Atari games from the early '80s.  Every.  Single.  One.

Now THAT was some weird stuff

[Jorpho]

Weirdest game I ever played (at length,) so far is ROM CHECK FAIL!

Such a cool game.  I wouldn't call it particularly "weird", though.  Strange how it doesn't seem to have spawned many imitators.

[DSwizzy145]

Most MS-DOS PC games from Korea & Hong Kong/Taiwan

[Disch]

Weirdest game?  Catherine:

http://www.gamestop.com/xbox-360/games/catherine/90444

You basically play a spineless, whining douchebag who is trying to juggle two girls but he's cursed by nightmares where people are turning to sheep and he has to climb a series of puzzle blocks in his underwear while a chapel bell relentlessly clangs in your ear.



It's not very good (though lots of online review sites give it glowing praise).  But man was it weird.

[chillyfeez]

OK, I just saw this

I know I probably shouldn't even acknowledge these exist, but I just randomly remembered all those...uh...not for kids Atari games from the early '80s.  Every.  Single.  One.

Now THAT was some weird stuff

I don't know of these, and I'm kind of morbidly interested. I mean, how Not-For-Kids could Atari games possibly be?