Post funny glitches you've seen in your games!

Have you been making a game and found a weird glitch, but then fixed it? Post it here!

Some of mine that happened to me just now:
Mario's sprites are all corrupted (I had put internal flag 2 instead of internal flag 22 to set whether Mario is visible or not - IF2 is the direction, so depending on where Mario was facing he would have a different sprite)
Jumping into a hole with the proper angle can cause Mario's Mama Mia sound to echo (the object that causes Mario to die when he touches it is 32x2, so I must duplicate it to fill an entire hole - if Mario collides with two of them the event is executed twice, causing it to sound echo)
Game Over continue option doesn't work: pressing Space takes you back to Game over (I had forgotten to set the lives to 5 before taking you back to level 1 of the world you were in)

while making koopas in Super Mario Stars my koopa shells kept killing you when idle so I decided to can that Idea and make Super Mario 64 style koopa shells,

I already fixed my Koopa Shells, they work perfectly now and I'm almost ready to release a demo of Return to SMB.
I just have to finish making the post-hit invincibility, make fireballs and koopa shells kill other enemies (still haven't done that, I might just leave out the feature that koopa shells get you more points from enemies and eventually 1ups as you kill more of them) and add a "demo finished" screen.

With ultra mario engine, you were once able to swim in air. Just by entering water, swimming a bit outside the screen (bottom part) and bypass the solid blocks. I fixed that glitch by making blocks to create another block under them so players aren't able to go under them.

In a game made with my engine, you're able to run and jump under water. Perform it by running down a slope that ends to water.

This post has been edited by ultramario on Jan 13 2007, 09:19 AM

In an early build of the Luigi's Game engine, jumping into a corner caused you to walk through walls and sink through the floor.

When I started doing later builds (with working AIs), Shyguys would occasionally get stuck near the edge of a cliff, shake extremely fast, and fly all over the place.

There was also this pretty awesome glitch where Luigi had no arms and fell three times faster than he jumped.

Well, I just fixed a glitch. (yay! RTSMB demo 1 is almost ready to release!)
When Mario hit a Goomba with a fireball, an endless stream of 100 points signs would come out of it. Why? I'll explain how it works.
Turning internal flag 10 on kills an enemy by fireball method (by how the enemy turns upside down, bounces up and then falls off the screen). When IF9 is on, the enemy moves up, alterable value E tracks how much it's moved up, and IF10 is on, the enemy moves down.
I had this code:
(Goomba) Internal flag 10 is on
Set internal flag 9 on Goomba
Create "100 points" at position (0,-32) relative to Goomba
Add 100 points to MarioScore (global value).
But I forgot to add "Set internal flag 10 off Goomba", so it would keep being triggered every frame!

not mine but it's still awesome:

Canned game I'm considering picking up again.

you totally should

Spyro sitting on Sparks and seemingly rubbing his butt on the dragonfly

Remember, this is about games you're making yourself.

Are you seriously thinking about un-canning that?! It would be indescribably cool if you did.

On my comp entry when mario was on a surfboard I screwed up the coding and it picked him up and mved right out of the screen. Then there was the glitch when he touched it he would bounce around randomly VERY fast then destroy himself.

Y("Mario") > frame height

oh and i was making mario swim in objects he shouldn't because my overlay RGB values were off

oops