Notes from the developer
What is known, what is broken, what is next.
Periodic Reactions is a teacher-built game in active playtesting. Deck v1.2 is the current build. The game will not change until enough classrooms have played it and told us what happened. Until then, this page is the honest list.
Known issues (Deck v1.2)
- The coach tip names one danger at a time. If you hold two halves of two different pairs, the tip may warn about one and you bust on the other. The equation on the boom card is always correct.
- QuickStart auto-names come from a fixed pool. One name in that pool is being retired in the next build.
- On some screens the card-draw pop-up shows on a plain light panel instead of the saloon styling. Cosmetic.
- The Reaction Legend text is small on a projector from the back of the room. Use How to play on this site for the big-type version of the three pairs.
- Seat panels show card values and pictures but not the element symbol. Tap a card to see its symbol and name.
Errata
Calcium + water: the game treats Water reacted with Calcium as "lime" and safe. Real calcium fizzes in water and makes calcium hydroxide (lime water). It is a real reaction, far milder than potassium. The game simplifies it to a safe reaction on purpose. Teachers: that gap between Ca and K is the activity series.
Acid + base: HCl and NaOH neutralize to salt and water. It is exothermic but not explosive. The game calls it a bust for game balance, not because your beaker would blow up.
Troubleshooting
- No sound: browsers block audio until you tap. Tap the Sound button in the top bar once.
- Out of plays: the free table gives 3 plays a day per email. It resets at midnight Eastern.
- Blocked at school: some district filters misread card games as gambling. Ask your IT team to allow lefthandedlearning.org. Show them this page.
- Smartboard looks dark: raise the board brightness or dim the room lights; the felt is dark by design.
- Text too small on the board: use the browser zoom (Ctrl or Cmd and +). The table scales.
- Chromebook: works in Chrome. No install, no account, nothing saved.
Planned
- Fixes above, after playtest feedback is in.
- Printable Teacher Pack (exit tickets, the three-fights poster, activity-series bridge, Spanish and Haitian Creole glossary, ESE path) sold on TpT, alone or bundled with the game.
- Your requests. Tell us what broke or what you want below.
Tell the developer
Music and sound
- Western Saloon — Ebunny — Pixabay — Pixabay Content License (ebunny-western-saloon-364961.mp3) \n
- Saloon Piano - Ragtime Retro Vintage Jazz Comedy Music — FreeGroove — Pixabay — Pixabay Content License (freegroove-saloon-piano-ragtime-retro-vintage-jazz-comedy-music-110970.mp3) \n
- Sci-Fi Documentary Piano — leberch — Pixabay — Pixabay Content License (leberch-sci-fi-documentary-262608.mp3) \n
- Saloon — VoldemarSF — Pixabay — Pixabay Content License (confirm title on receipt) (voldemarsf-saloon-353385.mp3) \n
- explosionCrunch_003 — Kenney.nl — Kenney.nl — Kenney.nl (credit requested, not mandatory) (explosionCrunch_003.ogg) \n
- forceField_000 — Kenney.nl — Kenney.nl — Kenney.nl (credit requested, not mandatory) (forceField_000.ogg) \n
- deal.ogg — license not yet verified \n
- draw.ogg — license not yet verified \n
- flip.ogg — license not yet verified \n
- reshuffle.ogg — license not yet verified \n
- shuffle.ogg — license not yet verified \n
- slide.ogg — license not yet verified \n
- button-soft.ogg — license not yet verified \n
- button-tap.ogg — license not yet verified \n
- confirm.ogg — license not yet verified \n
- error.ogg — license not yet verified \n
- coin-flip-chip.ogg — license not yet verified \n
- ka-ching-chip.ogg — license not yet verified \n
- saloon-door-squeak.mp3 — license not yet verified
Art
Allen Dobkin / Left-Handed Learning. Made with AI help. Table, cards, and cast: Saloon Lab art pack (see CREDITS).