chesse98 – Free online chess with the Crazy King icon

chesse98 – Free online chess with the Crazy King

by umut.dogan.can@gmail.com · Games
Manifest V3 Free
View in Chrome Web Store Data as of 12 Nov 2026

Free chess in your browser’s side panel: play the computer or a friend, daily puzzles and a coach. No ads.

Users
49
store count
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
total ratings
Store rank
#103K
#92K among extensions
Version
0.24.3
updated 3 Nov 2026

Users

monthly, 1 months
02449Oct 2026Nov 2026Nov 2026
Latest, 12 Nov 2026: 49 usersMove the mouse over the chart for any month

Ratings count

monthly, 1 months
001Oct 2026Nov 2026Nov 2026
Latest, 12 Nov 2026: 1 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About chesse98 – Free online chess with the Crazy King

Watching a video or browsing the web? Play chess right in the side panel. chesse98 is free chess in your browser’s side panel. Open it with one click while you browse and play a quick game, solve a puzzle or learn from your mistakes. Features • Play the computer: 5 difficulty levels, from very easy to a strong Stockfish • The Crazy King: a grumpy, teasing king who talks on every move • Coach mode: after a mistake the king tells you, arrows show your move and the best one, and you can undo and try again • Daily, weekly and monthly puzzles, plus free puzzles that follow your rating • Play a friend online with a short code, or two players on the same screen • Game analysis that explains your mistakes in plain words • Move suggestions against the computer, saved games, statistics and a shareable picture card • 10 avatars and 12 reactions to tease your friend; a puzzle report with your streak and dated history • Five looks, including the 90s-style chesse98 theme; 19 languages Private by design • No account, no ads, no analytics, no tracking • Games, statistics and settings stay in your browser • Online games only pass through our game server to reach your friend and are not stored Free and open source (GPL-3.0), made by Skynon Labs. Engine: Stockfish. Puzzles from the open Lichess puzzle database (CC0).

Growth

WindowUsersChangeRatingsRating
7 days+28+133.3%00.00

Version history

3 versions recorded
0.24.33 Nov 2026
0.23.329 Oct 2026
0.23.127 Oct 2026

Details

Category
Games
First seen
27 Oct 2026
Size
6.1 MB
Languages
de, en, id, nl, tr, es, fr, it
Pricing
Free
Privacy policy
skynonlabs.com
Support
skynonlabs.com
Extension ID
hecohickcbhkjkiokcaiaemdjgdediep

Permissions and risk

Minimal riskimpact 0, likelihood 3
Permissions
storagesidePanelalarms

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