Around the beginning of October, I started a Hybrid BASIC Jezzball game for the TI-84 Plus C Silver Edition and Doors CSE. For those not familiar with Jezzball, it's an extremely addictive arcade/puzzle game from the Microsoft Entertainment Pack (MSEP) for Windows 95. I used to have the most fun with that around 5th grade, and although there is one TI-83+ ASM version, it has poor reviews. There are no color versions. Anyway, I started a color version, but soon ran into speed problems. I therefore decided that I would make a version in Assembly, and that I might as well also submit it to the 2013 Omnimaga programming contest if I could get it done in time. To further challenge myself, I aimed to use the same source code to build both a color and monochrome version of the game.

And lo and behold, I finished both versions in about a week of work. Now that Omnimaga has finished private grading of its contest entries, I can finally publicly release Jezzball v1.0 for the TI-83 Plus/TI-84 Plus and the TI-84 Plus C Silver Edition. You advance through increasingly-challenging levels, filling the playfield by placing walls. You must prevent atoms (balls) from touching walls that are in the process of being built, but once a wall is complete, the atoms will bounce off that wall. Your goal is to fill at least 65% (75% in the color version) of each level to proceed to the next level. If you fill more than that, you receive a fill bonus proportional to how much extra you filled the play field. If you beat a level quickly, you also receive a time bonus. Your goal is to advance as far as possible. Jezzball v1.0 for the TI-83 Plus/TI-84 Plus and TI-84 Plus C Silver Edition has nearly identical rules to the original PC game, with a few tweaks to make it more fun on calculators.

As you might expect, Jezzball v1.0 requires Doors CS 7.2 or higher on the monochrome calculators, and Doors CSE 8.0 or higher on the color calculators. Simply send the jezzball_bw.8xp or jezzball_color.8xp file to your calculator's Archive, then run it from the Doors CS/Doors CSE desktop or from your calculator's homescreen. As always, please feel free to post compliments, criticisms, and (though I hope there are none) bug reports.

Jezzball v1.0 for the TI-83 Plus/TI-84 Plus
Jezzball v1.0 for the TI-84 Plus C Silver Edition

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