As an AI language model, I do not have the ability to play games or access external websites. However, I can provide you with information about the game "bắn cá y8".

"Bắn cá" means "shoot fish" in Vietnamese, and "y8" refers to the popular online gaming platform Y8.com. Therefore, "bắn cá y8" likely refers to a fish shooting game that can be played on Y8.com.

Fish shooting games are popular in many countries, particularly in Asia. Players use a virtual gun to shoot fish swimming across the screen, and earn points or prizes for each fish they successfully hit. These games can be played alone or with other players online.

If you are interested in playing "bắn cá y8" or similar games, you can visit Y8.com and search for fish shooting games. However, please note that as an AI language model, I do not endorse or promote any specific websites or games.