Sohl Posted March 28, 2021 Share Posted March 28, 2021 I’m back with a new homebrew game, where you fend off a viral infection to hopefully build ‘Immunity!’ You play the role of parts of the human immune system, in which you can fling antibodies from a ribosome, and if you neutralize an infecting virus, you can direct a macrophage to gobble it up. But watch out, if any virus finds its way to your cell membrane, it can find a place to latch on, which will increase the viral load and decrease your health! Clear enough viruses from one tissue type and your point of view will switch to another, in the sequence: lung, mucus membrane, bone, muscle, brain, and artery. Within each tissue type, you will find the virus mobility differs, adding challenge to your task. In this demo version of the game, you gain some antibodies each time you clear a virus and additional antibodies each time you clear a tissue type. Completely clear all infecting viruses before you run out of antibodies to win immunity. But if you run out of antibodies with the infection still present, or your health drops to zero, there is a deathly Game Over. Take care lining up antibody shots, as the cell membrane pores continually cycle between being wide open and more closed. This ‘demo’ work-in-progress version of the game is an 8K ROM that I hope you enjoy and help me improve by reporting bugs, gameplay issues, or ideas for the future. I do have a few ideas already to add flourishes to the title screen and main gameplay screens in the demo version. I also have ideas for a ‘full’ version of the game with a second gameplay mode with different kinds of action and strategy. Eventually, if this comes together as I envision, I hope it will be worth making available as a boxed cartridge with printed manual here through Atari Age! Controls: Immunity uses the Left joystick. Press fire (as prompted in the title screen) to begin gameplay. Move the cell’s ribosome Left or Right with the joystick. Press Fire to fling an antibody up, hopefully striking a virus and neutralizing a portion of its outer spikes (which will change color from dark red to yellow to indicate neutralization). Viruses have six zones of spikes. Hitting a virus when it is farther from the cell membrane will cover more of the zones with one antibody ‘shot’, three zones for the farthest, two zones for the mid-distance, and only one zone per antibody when the virus is low and close-in. Note: a flung antibody will be slowed dramatically if it hits the cell membrane or more solid parts of the surrounding tissue, and you cannot fling another antibody until the current either hits a virus or reaches the top of the screen. When a virus is completely neutralized and all spikes are yellow, push Up on the joystick to switch control to a macrophage, which will aligned vertically with the virus. Then use the joystick to direct the macrophage left or right toward the virus,. The macrophage will ‘chomp’ as it moves. If you you engulf and trap the virus by positioning the macrophage directly over it, press the Fire button to completely dissolve the virus and automatically switch control back to the ribosome. Or if you choose, you can switch back to the ribosome without clearing the virus yet by pulling the joystick Down. The game supports (B)eginner and (A)dvanced game options via the Left Difficulty selection switch. In Beginner mode, the viruses move significantly slower, and there are fewer viruses per tissue and overall to clear. The Reset switch will directly take you back to the title screen. Scoring: Whether you’ve won immunity or met an untimely death, when the game is over, the screen will alternate between the title/game over screen and the final gameplay screen, which will allow you to see what your final health level was and how many “breaths” you took before winning or loosing. The breath count is based on time, but when you run out of antibodies, your health percentage is added to your breath tally. Health starts at 96% and rises each time a tissue is cleared, up to a maximum of 99%. Each time a virus latches into a cell membrane, health is lost. Up to three viruses will latch within a tissue type. Each latched virus will replicate into four additional viruses when the tissue type switches. Other gameplay notes: You can fling antibodies “through” (around) latched viruses. Completely neutralized viruses cannot latch into the cell membrane. Only one virus can sweep across the cell membrane at a time looking for a latching site, so if a second virus is present, it will not fully descend until the first virus is either eliminated or latches on. Preview video: A slightly buggier version is demonstrated on my Odysee channel. Let me know what you think! I hope you enjoy my game theme in our current times! imm_proto_0_6.bin 10 1 Quote Link to comment Share on other sites More sharing options...
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