My first beta version is released (as win32 binaries and sources).
Links are in https://code.google.com/p/sebbu-ld23/ and http://www.sebbu.fr/ld23/.

Current screenshot :

There is a start & finish cell, several teleport and some gameover cells.
Some text is written in the stdout (and stderr if any errors occurs).

Future evolutions will be :

• limited visibility
• monsters ?
• damage event (from cell), either one-time or each second ?
• more (tiny) worlds
• level format & event format change (developer part)
• background story/context (explaining)

Open to any ideas / comments / thoughts.