- 01Value the item and budgets
- 02Choose a hidden bid
- 03Reveal and break ties
- 04Pay and plan the next round
Sealed simultaneous bids
Players commit resources without seeing current rival bids, then reveal together. Value and remaining budget matter instead of repeated incremental outbidding.
The player's decision
Bid high for a key item or preserve budget for a better later target?
Original scenario
Original setup: two players have ten tokens for three parts. Spending nine first leaves little leverage later; ties use a rotating priority token.
Start with this prototype
Build two local players, three items and fixed token budgets. Submit privately in turn, reveal together, and show tie/payment rules. Score after three rounds and reset; tokens are prototype points, not real transactions.
Change one variable
Compare revealed and hidden future items to test whether budgeting is reasoned rather than random regret.
What to observe in a playtest
Can players overspend or pay twice? Are ties, zero bids and final settlement deterministic?
Take the full design card
Includes rules, scope, tuning questions and sources for further planning. It does not create a project automatically.
Original analysis · version 1
Common pitfall
Client-side concealment is insufficient for network secrecy. A live version must collect commitments before revealing bids.
Observations and sources
Cases refer to public documentation. Developers and community wikis are credited separately; document review is not a claim of hands-on testing.
- Modern Art
Hidden auctions use simultaneous secret bids with explicit winner and tie rules.
- QE
Unlimited bids combine with elimination of the highest spender, replacing a fixed cap with relative risk.
Brief for the studio
Opens the AI studio with the brief below in the input. You can edit it. Nothing starts automatically.
Build two local players, three items and fixed token budgets. Submit privately in turn, reveal together, and show tie/payment rules. Score after three rounds and reset; tokens are prototype points, not real transactions.
Covers are original AI-generated style illustrations. Game names reference publicly visible design choices and remain the property of their owners. This atlas does not supply screenshots or assets from those games. Prompts and combinations are original drafts for new games.