See Letters and Sounds for detailed instructions on how to play loads of different games for these phases.
Interactive Whiteboard Games
Once you have saved these games it should be fairly straight forward to alter them to includethe letters or words that you need for any given day.
Sentence Substitution Phase 3 (Flash)
Sentence Substitution Phase 4 (Flash)
Soundbuttons Phase 2 (Powerpoint)
Countdown (Smart Notes)
Buried Treasure Phase 2 (Powerpoint)
Buried Treasure (Powerpoint)
These can be really useful to support children working at the early phases to work independently in the literacy hour. E.g. get them to play Snap or Pelmanism, ask them to write captions to go with the pictures, or get the children to match the pictures to captions that have already been written.
Vowel Digraphs - this isn't complete but there are some there as a start.
Scene Pictures for the end of Phase 3 - these can be used for writing labels or captions. For sentence ideas see p103-104 in Letters and Sounds
Magnetic letters (including attached digraphs) are incredibly useful for teaching at these phases. If you don't have any, these grapheme cards can be printed out and laminated as an alternative.