Designed by Leo Colovini and Fabio Visintin, Forest is a small box card game Helvetiq where the 2-4 players have to count and keep track of the small creatures pictured on the cards. The guidance on the box suggests it's for ages 6-99 but this is really a game for young (infant school) children - so 6-7 rather than 6-99.
Forest is played using long thin cards with cute art by Sarah Bourquin and Lucas Guidetti. These all depict trees or canopies and will have on them various combinations of up to four owls, frogs, fairies and Santas. Players always have a hand of three cards and on your turn you play one to the tableau: vertically if it shows tree trunks or horizontally on top if it is a tree canopy card.
This is a Where's Wally/Where's Waldo type game where you need to keep count of how many there are of each character and creature because when there are seven of any one type in the tableau you get to claim all those cards. Several of the larger characters on the foreground bear at least a passing resemblance to the little characters you are counting so they can prove to be a distraction for those who are playing this game in haste as a 'Snap' variant.
That's really all there is to the game. It's a super simple 15 minutes game but it's amusing for younger (infant school) children and there's some educational value in reinforcing counting and early arithmetical skills. If you wanted to extend this, it wouldn't be a huge stretch to house-rule that you score for ten-of-a-kind rather than seven.