Submission #4684: Baxter, Randil, Alyosha's NES Jackie Chan's Action Kung Fu in 16:32.75

System Nintendo Entertainment System Emulator FCEUX 2.2.2
Game Version Unknown Rom Frame Count 59663
ROM Filename Jackie Chan's Action Kung Fu (USA).nes Frame Rate 60.0988138974405
Branch Rerecord Count 8912
Unknown Authors Baxter, Randil, Alyosha
Game Jackie Chan's Action Kung Fu
Submitted by Alyosha on 5/5/2015 8:58:50 PM

Submission Comments
Jackie Chan's Action Kung Fu is a nice looking sidescroller with nice music as well, but there is nothing particularly note worthy about it.

Game objectives

  • Emulator used: FCEUX 2.2.2
  • Beats the game as fast as possible


The main improvement in this run over the existing published one is a new trick that preserves your horizontal velocity when jumping out of the river and off of conveyer belts. It also contains a neat little jump trick originally found by Diman that saves a few frames. The first level was played by Randil, who saved a few frames in it, the rest of the run is based off of Baxter's original.
Basically the trick I found is just releasing the right button the same frame you jump. Nothing special right? I'm surprised it went undiscovered for so long. Well, probably no one was looking...
Level 1: 7 Frames due to Randil: "I saved 1 frame on level 1-1 by getting maximal boosts from platforms, 4 frames by getting a better boost from the first platform on level 1-3, and 2 frames on 1-4 by jumping up the vertical section faster. "
Level 2: -3 Frames due to frame rule (?)
Level 3: 3-2 Improved ~30 frames due to momentum preservation trick.
Level 4: 0 (but the hits on the boss are slightly different.)
Level 5: 5-2 Improved ~70 frames due to momentum preservation trick. 5-4 improved ~5 frames due to Diman's jump.

Other comments

In my quest to obsolete old runs, this one I thought would be a tough one, but just trying random things I stumbled upon this improvement, lucky me!
Baxter's original run synced just fine on the latest FCEUX version. However, after I used Randil's WIP and patched in the rest of Baxter's run, there was a 3 frame loss at the end of the autoscrolling lava level. This was surprising since the level itself synced just fine with no added frames. Perhaps it was some kind of frame rule, but I couldn't fix it. A similar thing happened at the cloud boss, the first 6 shots synced just fine, but for some reason the 7th and 8th shots needed to be modified (although this didn't end up costing anything.) So maybe there is still something left undiscovered if someone were to dive deeper into this game. Diman also mentioned a way to hit one of the last bosses twice at once, but I'm not sure how.

Noxxa: Judging.
Noxxa: Accepting as an improvement to the published movie.
feos: Pub.

Last Edited by on 1/1/2022 6:14 PM
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