Eat Chess · Royal Merge

Move. Match.
Merge.

Royal Merge is a chess merge puzzle on a compact 4×4 board. Pick one piece. Move it by simplified chess rules. Match it with another of the same type and level. Pawns become Knights, then Bishops, Rooks, Queens, Kings, and higher-level Pawns. The ladder loops, and starts again at double the value.

Download on the App Store Get it on Google Play Download on the Mac App Store Plus: all unlocked, no ads How it plays

chef's note: Out now for iPhone, iPad, and Apple Watch on the App Store, Android on Google Play, and Mac as Royal Merge Plus with Royal Extras unlocked and no ads.

The Royal Merge app icon, a black pawn with a glowing crown and chess pieces stacked on a board
On the table

What a run looks like.

Three frames from the game. A Solo board, the New Game picker, and a Versus match mid-turn.

iPhone screenshot of Royal Merge mid-run in Solo, showing a 4x4 board with rooks, knights, and pawns, a score of 3,072, and the Hint button charging 154 points
Solo, mid-run
iPhone screenshot of the New Game picker showing Solo and Versus options with personal bests and a two-player chess set picker
Pick a game
iPhone screenshot of a Versus match on a shared 4x4 board, showing Player 1 on turn with score 6 and Player 2 waiting with score 12, both clocks at 8:59
Versus, mid-match
On Apple Watch

The same little board, now on your wrist.

Royal Merge for watchOS is out now on Apple Watch. It keeps the 4×4 board, the short rules, and the one-move-at-a-time rhythm in a smaller place.

Apple Watch screenshot of Royal Merge showing the How to Play screen with a Tutorial button and rules for moving chess pieces on the 4x4 board
How to Play
Apple Watch screenshot of the Royal Merge tutorial showing a 4x4 board, highlighted legal targets, and Select instructions
Tutorial
Apple Watch screenshot of Royal Merge gameplay showing pawns on a 4x4 board, legal move highlights, and the move controls
Mid-run
The pitch

Sixteen squares. One quiet idea per turn.

The board fills fast. A quiet setup move can matter as much as the merge it opens. The rules are short enough to fit on a coaster.

What's in the kitchen

Two ways to play. A clock you set yourself.

Solo

One player against the board. Play without a clock, add a Player Clock, set an Increment, or cap the run with a Turn Limit. Personal bests stick around.

Versus, two humans

Two players share one board on the same device. Pieces are shared, not owned. The active player scores only when they make a merge. Hand the phone over and let the other side cook.

Versus against the Computer

Player 2 can also be a local Computer opponent at Mild, Zesty, or Spicy. It thinks on your device. No network, no account, no leaking out the back.

Pawn Spawn and Royal Reserve

Every legal move into empty space adds a new Pawn. Pawn Spawn adds one on every second merge. Royal Reserve drops a Level 1 piece after every five successful actions. Every arrival can help. Every arrival takes space.

Combo multiplier

Back-to-back merges build a multiplier. Chain a few and the next one is worth a lot more than the first. A Castle Swap or a move into empty space breaks the chain.

Clock Collapse

Versus only. If a timed Player Clock hits zero, Clock Collapse keeps 20% of that player's score, resets the clock, and leaves that player on turn. The match continues.

Hint

Solo only. Tap once for promising pieces, tap again for a recommended move. It costs part of your current score and never plays the move for you.

Game Center

Official Solo runs can count toward local records, Game Center leaderboards, and achievements. The toggle lives in Settings.

Royal Recap

Tap Share Result and Royal Merge renders a portrait card with the final board, score, longest combo, and a few stats worth bragging about. Built on your phone, handed off to the iOS share sheet.

Offline by default

No accounts. No ads. No analytics. Saves and stats live on your device. The whole game runs in airplane mode if you want it to.

iPhone, iPad, Apple Watch, Android, and Mac

Royal Merge runs on iPhone, iPad, Apple Watch, Android, and Mac. Royal Merge Plus on Mac includes Royal Extras automatically, stays ad-free, and supports keyboard play.

Free sets, optional cosmetics

On mobile, start with the free chess sets and Quiet Royal theme, then add optional cosmetic sets, themes, and the Royal Patron badge if you want. On Mac, Royal Merge Plus includes those extras free. Purchases do not change movement, scores, spawns, hints, timers, Castle Swap, leaderboards, or match results.

The voice of the game

"A quiet setup move can matter as much as the merge it opens."

Royal Merge is the second dish in the Eat Chess series. Familiar chess vocabulary, short rules, and a board small enough to read at a glance. The kind of puzzle a clever player can chew on for a while and a kid can still pick up.

Questions or comments Reach the kitchen at