Time (UTC)SourceWhat changedAddedEditedRemovedReference
9 Sep 2026
NewsZero Sum Dev Log #6 - New Sum Barrier Operator Mode Features———Community
Community · published 9 Sep 2026, 20:30:59 UTC
Zero Sum Dev Log #6 - New Sum Barrier Operator Mode Features
The Sigma Operator is intended as a very powerful crowd control, merging all hit numbers into one single target to deal with. The real problem is, how to incorporate 3 different weapon modes into it? Mode 1 is simple, a lob AoE, easy to aim, useful in certain situations. Sum Barrier is basically Mode 1, but stationary, but can absorb and sum numbers together over a longer time period. Magnet Au…
NewsZero Sum Dev Log #5 - School's back!———Community
Community · published 2 Sep 2026, 20:30:39 UTC
Zero Sum Dev Log #5 - School's back!
In "Problem Sets" you can create your own math puzzles with a lot of freedom, then get a code to share it and let anyone play it. Once they are done they get a result code to send back to you and you can collect and compare results of all of them. Perfect to create your own math puzzles and teach math in a fun way. In this Sample Set your job is to bring every number to 10 in Wave 1 and to 100…
localization fixes · clarified remainder and decimal spawn differences · some subtle indicator for the feedback button · writing paper rebalancing (enemies spawn faster now, especially on later waves) · factorial fix (prevents factorials <2 from spawning) · receipt paper balancing to operators offered
NewsZero Sum Dev Log #4 - The Euler Owl———Community
Community · published 19 Aug 2026, 20:30:32 UTC
Zero Sum Dev Log #4 - The Euler Owl
A Taylor series builds a function out of infinitely many terms, each one smaller, but there are always more. The Owl's volleys work in a similar way: ignore them, and the expansion keeps adding numbers until the screen is more enemies than paper. Reduce them to zero or drown. Wishlist now — the numbers are counting on you not to.
NewsZero Sum Dev Log #3 - Modulo, the player's nuke———Community
Community · published 5 Aug 2026, 20:30:11 UTC
Zero Sum Dev Log #3 - Modulo, the player's nuke
There's a 960 on screen. It's angry, it's TANKY and your minus does 1 damage. You could be here all day. Or you could fire one %80 and watch it solve all your problems. Modulo replaces a number with the remainder after division. 960 divided by 80 is exactly 12, remainder zero. The bigger numbers in the game are just one good Mod Blast away from nothing, if you can do the math in your head. Modu…
Verdict Game mode has been added to the Zero Sum Demo! try out this new game mode where every operation is judged. Your goal here is not to reduce to zero, but to do clean math in one operation. This mode serves as a small sneak peek at the much larger Problem Set game mode, where you can create, share and play custom made math puzzles with tons of different approaches. more changes: · SFX upda…
NewsHappy Pi Approximation Day! - Zero Sum Dev Log #2———Community
Community · published 22 Jul 2026, 17:00:37 UTC
Happy Pi Approximation Day! - Zero Sum Dev Log #2
Today is July 22nd. 22/7. Pi Approximation Day. Close enough to π and close enough to meet the Pie Pi Boss! π's digits go on forever and never repeat, which makes them perfect projectiles to hunt the player. Pie Pi fires sequences of Pi numbers each phase and every number has to be reduced to zero to expose a weakspot. Find away to its core and reduce this to zero to win this boss fight. Wishli…
Now that Steam Next Fest is over and the Demo is polished, it's time to start the Dev Log! I'm making good progress with the game and release is still planned for Q4 2026 , still a lot to do, though. Currently working on finishing all phases and mechanics for all the bosses and am already ~55% done with it. I refined the Matryoshka (Nested Doll) boss a bit more and introduced a new enemy type w…
NewsNew experimental demo boss, steam leaderboards & small fixes———In-game event
In-game event · published 13 Jun 2026, 13:53:44 UTC
New experimental demo boss, steam leaderboards & small fixes
Added an experimental demo boss with Steam Leaderboards · Changes to Math Paper map (Conveyor mode) — now plays differently from the standard Writing Paper mode · Fixed some grading inconsistencies
NewsDemo: additional boss behaviours, new upgrade nodes, loadout additions———Game update
Game update · published 9 Jun 2026, 16:17:26 UTC
Demo: additional boss behaviours, new upgrade nodes, loadout additions
Summation Serpent head now charges the player when no more segments are to be cleared · can be stunned by clearing the number that breaks off the serpent · Factorial Factory now spawns smaller and much slower factorials on the last two phases · Added two more upgrades to basic division (start with /5 and start with /10) · "Start with"-values can now be adjusted in the loadout if unlocked via up…
NewsMinor Summation Serpent and Sieve Spider boss fixes———Game update
Game update · published 5 Jun 2026, 15:02:29 UTC
Minor Summation Serpent and Sieve Spider boss fixes
Sieve Spider · now uses the correct number designs as follows: · "spiky" numbers only for invincible numbers · "glitched" numbers only for weakpoints (legs) · NEW: "hatched" numbers instead of "spiky" for all sieve numbers. as before, in easy mode, sieve primes having an additional small effect to indicate that they are primes Summation Serpent: · fixed a bug, where under very specific circumst…
NewsZero Sum Demo Playable During Steam Next Fest!———Steam news
Steam news · published 1 Jun 2026, 10:33:26 UTC
Zero Sum Demo Playable During Steam Next Fest!
Gear up for some raw arithmetic violence ! In Zero Sum , every bullet is an equation and every enemy is a number. No health bars. No hit points. Just pure mathematical combat in a hand-drawn twin-stick shooter that looks like your math notebook came to life and got angry. The Demo is available during Steam Next Fest and includes a substantial chunk of the full game: · 2 out of 6 maps · 10 out o…