BMX Jungle Bike is a game about riding a BMX bike through a jungle.

Game objectives

  • Emulator used: BizHawk 2.9.1
  • Model used: +2A
  • Aims to complete the game as quickly as possible.
  • Heavy glitch abuse.

Comments

This is a tool-assisted speedrun of BMX Jungle Bike for the ZX Spectrum. It completes the any% category, completing the game as quickly as possible.
TAS timing (power on until last input): 9070 frames, 3:01.327
RTA timing (press 1 to start the game until "WELL DONE YOU ARE THE NEW BMX JUNGLE BIKE CHAMPION NOW TRY AGAIN" appears): 1359 frames, 0:27.169

Model

The run is performed on the Sinclair ZX Spectrum +2A. BMX Jungle Bike does not attempt to control its framerate, it simply processes the game as quickly as it can at all times. 128K versions of the Spectrum run their Z80 processor at a slightly higher clock rate, and the +2A and +3 also have some improvements in memory access speeds. As a result, the game runs fastest on these models. The +3 is a disk-based system, and BMX Jungle Bike has never been officially released on disk, so the run uses the +2A and loads the game from tape.

General information

We start by choosing to play with Sinclair joystick, and pick the hardest difficulty. The difficulty selection controls the number of enemies that appear,
This would be a fairly normal game, go fast and jump over obstacles. But for some reason, pressing or holding the jump button while in the air makes the game skip all processing except for our character movement. This makes the game run much faster and also makes us invincible. However, we're not immune to large gaps, and we're still vulnerable while touching the ground, so we do have to slow down sometimes. We also have to make sure to let the game process screen transitions, otherwise we're stuck looping the same room over and over again.

Other comments

85.7% of this movie is spent loading the game.
Special thanks go to Sir Clive Sinclair for making the Spectrum, and everyone in the Speedtrum Specrunning community for keeping da speccy alive.

DrD2k9: Claiming for judging.
DrD2k9: Looks good. Accepting.

despoa: Processing...


TASVideoAgent
They/Them
Moderator
Joined: 8/3/2004
Posts: 15580
Location: 127.0.0.1
This topic is for the purpose of discussing #9051: DigitalDuck's ZXS BMX Jungle Bike in 03:01.11
CoolHandMike
He/Him
Editor, Judge, Experienced player (895)
Joined: 3/9/2019
Posts: 696
This looks well done. I was able to get some time saves by only releasing the "0" for one frame near the end of the screen, but later on there are a couple screens where waiting is necessary. One screen in particular was quite tricky with this bubble right before a gap which seemed to be impassable. Well done! Notes: 0 jump - holding 0 and 7 at end 7 accelerate - need to hold at end of screen to advance looks like. 6 brake - holding 6 at end of screen will not advance
discord: CoolHandMike#0352
Player (153)
Joined: 10/4/2015
Posts: 139
Bunny hopping through the jungle with the greatest of ease
Enter the Matrix is a piece of garbage but I'm gonna finish it if it kills me.
Post subject: Movie published
TASVideoAgent
They/Them
Moderator
Joined: 8/3/2004
Posts: 15580
Location: 127.0.0.1
This movie has been published. The posts before this message apply to the submission, and posts after this message apply to the published movie. ---- [5966] ZXS BMX Jungle Bike by DigitalDuck in 03:01.11