Might be wrong here since I've only started playing the Switch version, but the game seems pretty much identical otherwise. At first glance the 3DS/Wii U versions with touch screen menus seem more different than the Switch version does.

Nab% when?

So I've been toying around with the game a bit to see if I can find new weird ways to mess it up. I haven't found anything that's viable for any current routes, but some interesting stuff nonetheless. This was all on HD but I'm pretty sure it'll work the same way in Standard as well.

So basically what I've been looking into is abusing the game over scenario. When you run out of lives, the game gives you 10 seconds to continue. My hypothesis was, if I tried forcing a continue screen during scenarios that require the alien, I might find some interesting interactions. Here are my findings:

1-1: School bus picks up alien - I shot the install ball as he started his jump and dug underground to kill myself. This made it so that I could die shortly after the boss. The result of this was, the bus passes the alien and keeps moving across the screen. I'm not sure if this actually saves time, and if it does it's basically negligible. I don't see any case where this trick would come in useful unless you're already in a bad situation.

1-2: Fat Kid picks up alien - I jumped into the street at the same time that I killed the bee robot. Not much different here, it just cancels/delays the Fat Kid flying in to pick you up, but the level still ends at the same time. No time save.

1-5: Level end - By far the most interesting I found. Since this doesn't have the long level end song it meant that I could potentially end the level on the continue screen. What I did was kill the final robot at 0 lives just as he was spawning a rocket, so that it could kill me just before the cutscene starts. Because of this, the results screen was skipped entirely, but when the next level started both players showed the "Please Wait" message and Boris hung on his starting animation. I'm assuming the game will hang here forever.

2-4: 2nd train boss - This one I actually knew about before and is the reason I started wondering about these interactions. Basically, at the start of the second boss in 2-4 there's a cutscene where Boris unhitches the train. If you die just before this cutscene (0 lives isn't necessary if your timing is good), you will respawn during the cutscene, which will let you stand on the box and charge up a shot before the boss starts (something you don't have the opportunity to do normally). This doesn't save a ton of time but it helps if you don't have a powerup when you reach the boss. I'm not 100% certain if it works the same way in Standard but I'm assuming it does.

3-4: Level end - I killed the boss and let myself get killed by a bomb, spawning the continue cutscene. This one's similar to 1-5 in that after the Install Ball jumped out of the robot, it triggered the cutscene where the alien is supposed to walk towards the Install Ball. Since there was no alien, it gave me the 2 "Please wait" messages and hung there forever.

While there's nothing here so far to help with speedruns, it's still pretty interesting. As far as I know, these are the first two reproducible hangs discovered, though I might be wrong.

Other interactions that I haven't tried yet:

Normal level end: What I want to do here is basically end the level on the continue screen to force a scenario where neither player exists in the next level. I've tested it with 1-5 to 2-1, but 2-1 has a cutscene that depends on the alien. I want to see what happens if the actual level starts and neither alien is on the field. Unfortunately, this is very difficult/impossible to do because most levels end with the alien cheer + song which is about or a little over 10 seconds long.

1-3 level end: For this one I specifically want to find out what will happen with the cutscene at the beginning of 1-4 if there are no aliens. I'm assuming it'll be a hang like the other levels I've tried.

2-5 level end: This one I'm very interested in seeing. I'm assuming once it cuts to the alien ship it'll hang there, but I want to see it for myself. I think it's very hard to do as you'll basically have to get hit with a bullet around the same time as you kill Boris.

2-6 level end: Haven't tried yet, but I'm assuming it works the same way as 1-5. Interested to see what happens with the truck cutscene in 3-1.

3-2 level end: I don't think anything is possible here but with how the level ends so differently from other levels it might be worth trying some experiments.

I have some videos of the ones I've experimented with already and I'll upload them later.

It's not for moving around, it's just if you shoot the eye.

Oh wow, really? I've never wanted to look into this because I hate that kind of thing lol. I wonder if it's the same way for HD.

That was one of the infinite point tricks in the original, which are not included in the HD version because of leaderboards. You can also shoot the Matryoshka bears in the area before the trash compactor boss, and up at the metal detector-looking machine near the beginning of 3-3 I believe. Basically if you shoot the eye as he's falling he'll stay in place so you can get all the points you want.

I don't remember if this is the case in Standard, but the cutscene after the battle has the alien walk towards the Install Ball after the fight, so to save for time you want to be standing right next to it so he doesn't move.

I've been learning HD for the past year and just submitted a 45:39 run. Though if you compare the splits with the standard WR it tends to vary a lot.

HD isn't just a prettier version, there are some differences that change how the game is run and how fast you can go through certain portions.

• Load times much quicker on HD.
• HD is widescreen which gives more space in certain cases.
• Unconfirmed, but I think all throughout the game there are slight health and enemy balance differences.
• Also unconfirmed, but I think fewer lives are rewarded in HD, which doesn't make a huge difference in Easy but for Hard could change the run a lot.
• Baron Butterscotch doesn't become dazed in HD (much smaller window to bite his head)
• 3-phase robot in 2-3 doesn't shoot the top bullets, making it much easier to destroy its first phase.
• Donkey Kong section in 2-5 stops scrolling if you die (this is a minor one since you shouldn't be dying anyway, but possibly worth mentioning anyway).
• Still needs further research, but I'm pretty sure the alien in 3-1 will in some cases start the battle right away even if you don't attack it, allowing you to charge a shot (I toss grenades just to be safe).

I think there are more differences but I can't quite remember any more atm. Overall it's mostly minor differences but it might be worth splitting them anyway, since it's not just a simple port.