If you buy Half-Life 2 bronze, silver, gold. You will get Half-Life 1 with it, so then its possible for you to play Half-Life 2 & Earth Special Forces on Half-life 1.KidBoy17 said:The above posters are correct. ESF can only be played for Half-Life 1 and not Half-Life 2. Also ESF will never go to HL2. Plenty of people have asked the team if they would and the team themselves even said they would not. They do not want to spend the rest of their lives working on this mod. If you want to make a DBZ mod for HL2, by all means go for it and I support your actions.