The window of Romi is divided into two principal elements: the board, with 8 rows of 23 cells where you put the cards that you play, and the rack where the player's cards are stored. The groups of cards placed on the board must be separated by one or more empty cells. The player's cards can be placed anywhere on the rack.
To place a card on the board, you can click the card and it will move automatically on the board. You can also select a card and move it manually to the destination of your choice.
You can form groups of cards on the board by clicking sequentially on each card from your rack or from the board.
Romi does not allow you to place a card before or after a card on the board, if the group formed with this card is not valid.
The player can select a group of cards on the board by clicking with the Option key on the first card he wants to select, all the following cards are selected. He can also use the same Option-click for selecting a group of cards on his rack. In this case, only the following consecutive cards who can make a valid group are selected.
If you can't or don't want to play a card, you must draw one by clicking on the "hand picking a card" icon. The card is selected randomly in the remaining cards.
When you have finished your turn, you click on the sand-glass icon. Romi checks that the game is valid and Romi plays his turn. When Romi plays, the sand-glass is replaced by a computer icon.