In a $2$D Array. For each move, the player can choose up$,$ down, right, left, or quit. The player will only be given options that are available. For example,

The Map.

Choose your next move. $($r$)$ight$,($d$)$ own, or $($q$)$ uit:

Show the map for each turn.

Give the player options for moves.

Validate all inputs.

Allow the player to play multiple times.

You may be creative, and make the game better.