Left and right arrow keys control both characters, but they jump with separate buttons. https://tic80.com/play?cart=597
Made with BizHawk interim but syncs on 2.9.1. I also used a modified ROM to show the X and Y positions as RAM Watch isn't really usable, but this didn't affect sync either.
Quite interesting to route and TAS. Movement is 1 pixel per frame with no acceleration. Annoyingly they would sometimes stand still for one frame upon landing, so I changed up the jumps to avoid this where necessary. The last level took far longer than any of the others, and it's definitely still improvable.

DrD2k9: Claiming for judging.
DrD2k9: Unclaiming for judging and joining as co-author.
When I grabbed this original submission for judging, I stumbled across a quick glitch improvement on the very first level (explained below). I checked to see if Randomno wanted to investigate the glitch further or if I should more fully examine the run myself to see if the glitch was an option beyond the first stage. I ended up doing the more detailed evaluation of the run for further glitch use and any other improvements (as the original submission notes suggested there may be improvement possibilities in the final stage).
Fade-Out Glitch: I quite accidentally discovered that pressing either character's jump button just before stage 1 started caused the level graphics to fade back out immediately after fading in. The two characters were still visible and moved as normal, and the stage's geometry remained unchanged. The stage was still completable as normal by getting the characters to the doors. The fade-out glitch simply eliminated the need for a fade-out after reaching those doors which eliminated the fade-out delay after completing the stage. This glitch saved 15 frames in the first stage. Unfortunately, I was unable to repeat the glitch for any other stage.
All other improvements were from movement optimizations. The chart below shows where improvements were made. The total difference between this current version and the original is 41 frames.
StageStage DifferenceTotal DifferenceImprovement Notes
1191915 frames saved from from fadeout glitch and 4 from optimized movement
2019
3120optimized movement
4020
5222optimized movement
6123optimized movement
7023
8023
9124optimized movement
101741optimized movement
I've updated the temp encode. I have also updated the submission to show BizHawk 2.9.1 as the emulator used (as that's what I used, even though the original was on an interim build).
Of an interesting note, I also learned that pressing the jump buttons on the end-game screen causes the characters to jump up from below the bottom of the screen.
Resetting to New for another judge.

CoolHandMike: Claiming for judging.
CoolHandMike: Replacing file with linked 1f improvement. Fixed rerecord count to 3904.
CoolHandMike: This is a fun little puzzle game using shared but opposite controls with some cool tricks being used by both Randomno and DrD2k9. Interesting fade-out glitch at the start, and then a couple other things caught me by surprise like jumping off the lava, and getting stuck on that one block deliberately so that the other player could move. The game play certainly makes for a nice short watch. I was unable to find any improvements anywhere so quite optimized.
Accepting to Standard. Great job!

despoa: Processing...


TASVideoAgent
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This topic is for the purpose of discussing #9103: Randomno & DrD2k9's TIC80 Double Sided in 00:44.87
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-1f on the last jump. The original rerecord count was 3867.
Post subject: Movie published
TASVideoAgent
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This movie has been published. The posts before this message apply to the submission, and posts after this message apply to the published movie. ---- [6026] TIC80 Double Sided by Randomno & DrD2k9 in 00:44.87