Your unfair edge for online chess.
Thundry is a stealth desktop overlay that draws best-move arrows on top of your live game — invisible to OBS, Discord, and every screen recorder on the market.
Every edge. One overlay.
OBS-proof overlay.
Rendered on a hardware-layer surface that screen recorders, capture cards and Discord streams simply cannot see. Your opponents watch a clean screen.
Grandmaster-grade engine.
Stockfish-class analysis running locally with sub-second best-move suggestions and PV lines refreshed on every position.
Lichess & Chess.com.
Built for the two biggest chess sites. No scripts to paste, no extensions to install, no browser fiddling.
One-key everything.
Nothing to alt-tab. Nothing to click. Move, glance, move.
Streamer safe.
Stream your games to Twitch, YouTube or a friend on Discord. The overlay is yours alone. Recording apps capture the game as-is.
You see everything.
They see nothing.
Thundry renders on a display surface that screen-capture APIs cannot reach. If you record your gameplay with OBS, share your screen on Discord, or stream to Twitch — the overlay is invisible on the other side.
- OBS Studio + all Display / Window / Game capture sources
- Discord screenshare & Go Live
- NVIDIA ShadowPlay & AMD ReLive
- Windows Game Bar, Xbox capture, browser tab share
OBS capture
Your screenDrag the slider — same game, two realities.
One plan. One price.
Cancel any time. No commitment.
- OBS-proof overlay
- Lichess + Chess.com
- Best-move arrows
- 24/7 Discord support
- Free lifetime updates
- Cards & crypto accepted
Thundry
Fully operational. Safe to run.
Straight answers.
Anything else? Ask in the Discord — average reply under 10 minutes.
What is Thundry?+
A desktop chess assistant that draws best-move arrows directly over your live game — but only on your screen. It runs alongside your browser or the chess client of your choice.
What do you mean by "OBS proof"?+
Screen recorders such as OBS, Discord screenshare, NVIDIA ShadowPlay, Windows Game Bar and browser tab capture all see through the overlay. If you stream your gameplay, viewers see the raw board — never the arrows or engine lines.
Is it detectable by chess sites?+
Thundry runs entirely outside the game. It does not inject code, read memory, modify network traffic or install browser extensions. The chess site sees a normal, unmodified session.
How do I pay?+
$3 / month, billed through a checkout link posted in the Discord. We accept cards and cryptocurrency. Cancel any time — access removes at the end of the current cycle.
How do I get support?+
Open a ticket in the Discord server. Average first response is under 10 minutes.