Lock's Quest is a new, original title for the DS, that builds on the "tower defense" genre.

In the game, a diabolical mechanical army devastates a kingdom as village after village fall under its wrath. The young, brave hero Lock is the kingdom's last hope to survive the oncoming invasion. As a newly trained Archineer (part Architect, part Engineer), Lock must utilize his skills to build customized towers, traps, walls, weapons and other defences in order to preserve precious source artifacts and save the kingdom.

• Players assume the role of Lock, a young archineer, as he creates a virtual world block-by-block in order to defend his homeland against invading enemies.
• 4 large, unique worlds with more than 100 different areas within the worlds.
• Players must use different strategies to defend and protect the sacred source artifacts, collect coins and scraps in order to make new weapons and build and repair structures.
• Two modes of play - building mode where there is a time limit restricting how long Lock has to build structures inside the village as well as Battle mode where players can either attack or defend in one-on-one combat, while scrapping for coins and scraps to use in following battle rounds.
• Players will be able to challenge their friends in intense versus battles via multi-card play.