Five Star Gift Ideas

For your son's birthday, you can consider the following gift ideas based on his liking for Half-Life 2:

1. Half-Life 2 Limited Edition Box Set: You could get your son the official game box set to add to his collection. The box set includes a Half-Life 2 game disc, an art book, a sound CD, and a behind-the-scenes DVD.

2. Half-Life 2 Hoodie: Your son might love a hoodie featuring a Half-Life 2 logo or graphics. You could browse online stores, including the Valve Store, to find something he might like.

3. Half-Life 2 Posters: Check out websites like Etsy or Amazon to find unique posters or prints of Half-Life 2 game art that your son can add to his game room or bedroom.

4. Half-Life 2 T-shirt: Another option is to get him a t-shirt featuring his favorite game. There are many designs and styles available on online stores, and you can choose something that suits his taste.

5. Steam Gift Card: If all else fails, consider getting your son a gift card for the steam store. He can use the card to buy new games or add to his current collection.

Or you can get him a star map with the date when he was born.