# Connect Four
> ⚠️ **Experimental — generated with no human supervision.** This realm was
> produced automatically by an MCP-driven agent to exercise the gno MCP server
> and tooling, and to generate test content for gno compilers, linters and
> formatters. **Not audited. Not for production.** Full context & folder README:
> [r/moul/x/daily](https://github.com/moul/gno-contracts/blob/main/r/moul/x/daily/README.md)
---
A two-player Connect Four realm on a 7-wide × 6-tall board. The game creator plays 🔴 and moves first; the named opponent plays 🟡. `Drop` enforces turn order by caller, rejects full and out-of-range columns, and detects a horizontal, vertical, or diagonal 4-in-a-row (or a draw). `Render` draws the board with 🔴🟡· and shows whose turn it is or who won.
Realm path: `gno.land/r/REPLACE_ADDR/connect4`
## Example calls
```
# create a game against another address (you are 🔴, returns the game id)
NewGame(g1zabc...opponent) # -> 1
# drop discs into columns 0-6 (turns alternate, enforced by caller)
Drop(1, 3) # 🔴 drops in column 3
Drop(1, 3) # 🟡 drops in column 3 (called from opponent's key)
# view state
render: # lists all games
render:1 # shows board for game 1
```
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---
Part of **[moul/gno-contracts](https://github.com/moul/gno-contracts)** — moul's versioned gno.land contracts. See the repository for the full catalog, build/test tooling, and usage.
**Dependency graph:**
> 🧪 **Highly experimental — potentially vibe-coded.** Not audited; may break, change, or be removed at any time. Do not use with anything of value. Full disclaimer: [DISCLAIMER](https://github.com/moul/gno-contracts/blob/main/DISCLAIMER.md).
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Drop(cur interface {.seal func(); Address func() .uverse.address; IsCode func() bool; IsCurrent func() bool; IsEphemeral func() bool; IsUser func() bool; IsUserCall func() bool; IsUserRun func() bool; PkgPath func() string; Previous func() .uverse.realm; String func() string; Sub func(string) .uverse.realm; Subpath func() string}, gameID int64, column int)
NewGame(cur interface {.seal func(); Address func() .uverse.address; IsCode func() bool; IsCurrent func() bool; IsEphemeral func() bool; IsUser func() bool; IsUserCall func() bool; IsUserRun func() bool; PkgPath func() string; Previous func() .uverse.realm; String func() string; Sub func(string) .uverse.realm; Subpath func() string}, opponent string) int64
Render(path string) string
Signatures reconstructed verbatim from vm/qfuncs — interface params keep their inline definitions.
vm/qrender output, sanitized (docs/render-security.md) and displayed in an empty-sandbox iframe — scripts, forms and popups cannot run. Links stay inert in-preview; right-click to open.