Online only · Theo Kostas
Stop rolling.
Start solving.
A fully online game-theory academy run by Theo Kostas — a Greek-American theorist who breaks grappling into a closed system you can solve. No physical mat. No walk-ins. Just opponent-specific game plans, system maps, and weekly office hours.
Courses
Popular This Week
System
The system, in four parts.
▶
Link
1×
♥
Mirror
Note
Playlist
⛶
Close
Try the player
A-B repeat, mirror mode, speed control, notes — all built in. Click to try it yourself.
System Library
Every technique mapped to its parent, its counters, and its branches. Browse the position tree, not a video shelf.
Frame Marks
Mark the exact frame your guard broke. Tag it, label it, replay it until you've solved it.
Game Plan Builder
Compose opponent-specific routes. Stack openings, traps, and finishes into a single playable sequence.
Office Hours
Weekly live sessions with Theo. Bring a clip, get a system breakdown. The mat is closed — the office is open.
THEO KOSTAS
Founder · Theorist · Online Only
Greek-American black belt obsessed with game theory. No physical mat, no walk-ins, no scheduled classes — just system maps, opponent-specific game plans, and weekly office hours. Built for the brown belt who studies more than they roll.
Engage
Choose Your Operator Class
CLASS 01 / RECRUIT
Recruit
// Get the foundation
Videos30
Hours5
Drills PDFLimited
Live Q&A—
Community—
$0
/ 7-day trial
Initiate ›
Recommended
CLASS 02 / PRACTITIONER
Practitioner
// Drill the system
VideosAll
Hours80+
Drills PDFFull
Live Q&AMonthly
CommunityDiscord
$19
/ month
Deploy ›
CLASS 03 / ARCHITECT
Architect
// Build your own engine
VideosAll + Vault
HoursUnlimited
Drills PDFFull + Custom
Live Q&AWeekly
CommunityInner Circle
$39
/ month
Engage ›
Ready to engineer
your game?
your game?
Join the system. Build the routes. Solve the rolls. Office hours are open.
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