Prism Chess vs Overboard!
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Prism Chess
Experience classic chess with a unique twist. Rotate sections of the board to reposition pieces, disrupt opponents, and create new tactical opportunities. This game introduces a novel win condition where capturing the king directly ends the match.
- Classic chess rules with board rotation
- Local multiplayer on a single device
- AI opponent with adjustable difficulty
- Unique win condition: direct king capture
- Visual grid guides for rotation zones
- Move log and undo functionality
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Prism Chess is chess — with a twist. Literally. Play on a standard 8×8 board with all the classic rules you know, plus one game-changing addition: the middle of the board is divided into eight 2×2 grids that you can rotate 180° on your turn. Every turn, you make a move — and optionally spin one of the grids before or after. Rotate to reposition your pieces, disrupt your opponent’s formation, clear a path to their king, or set up a devastating capture. The rotation zone spans the four middle rows of the board, turning familiar chess positions into entirely new tactical puzzles. Prism Chess introduces a win condition unique to the game: rotate a grid to expose the opponent’s king, then capture it in the same turn. No check announcement, no chance to respond — the king is simply taken. Players must think defensively about rotation threats at all times, even when the king is safely on the back rank. FEATURES: • Two Players — Play locally on a single device with a friend • vs Computer — Challenge the AI at Easy, Medium, or Hard difficulty • Full Chess Engine — All standard chess rules including castling, en passant, promotion, and checkmate • Rotation Mechanics — Spin any of 8 grids in the middle of the board 180° as part of your turn • Grid Guides — Visual indicators show the rotation zones on the board • Move Log — Track every move and rotation throughout the game • Undo — Take back your last move All the depth of chess with an entirely new strategic dimension. Can you think one spin ahead?
Overboard!
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Two moves. One push. No mercy. Overboard! is a fast, brutal two-player abstract strategy game. Slide your pieces into position — up to two moves per turn — then shove. Force any one of your opponent's pieces off the board and you win on the spot. Simple rules, deep tactics: • Squares move and push. Rounds only move — but they block like champions. • Every turn MUST end with a push. Run out of pushes and you lose. • After you push, the anchor locks your piece in place: no immediate counter-shove. • Rails guard the sides. The ends are open water. WAYS TO PLAY • Pass & Play — one phone, two players, zero setup • Play a Friend — Game Center invites, play at your own pace • Ranked Lobby — matched with strangers near your rating, with a full Elo system • Match History — replay any finished game move by move Learn it in two minutes with the built-in guide. Master it never.
Screenshots
Verdict
The clearest difference is iOS requirement: Prism Chess at 15.1 against Overboard!'s 17.0. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Prism Chess | Overboard! |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 32 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Hunter Billhardt | Sanketh Kamath |
In-app purchases
Prism Chess
No in-app purchases
Overboard!
No in-app purchases








