Konami Krazy Racers - Control Replay Camera

Quick Boost:
To gain a head-start in the beginning of a race, press and hold A just before the fourth light comes on and the race starts. If it works, you'll be boosted ahead of the pack, giving you a nice head-start for that race

Play as Bear:
Start a race on the Cyber Field 2 track. Collect the blue diamond between the two holes near the finish line. Complete the race and save the game. Bear will be unlocked on the character selection screen.

Ebisumaru:
Unlock Bear. Play the Ganbare Dochu 1 and 2 tracks with Bear and beat the record time to unlock Ebisumaru.

Play as King:
Start a race on the Sky Bridge 2 track. Collect the Blue Bell power-up, then find the jump just before the large gap. Note the blue diamond on a platform just to the right of the jump. Jump towards the platform, using the power-up for an extra boost. Collect the blue diamond, complete the race, and save the game. King will be unlocked on the character selection screen.

Play as Vic Viper:
Start a race on the Moon Road track. Collect the Blue Bell power-up, then find the first long jump on the track. Jump and use the power-up for an extra boost to land on a long platform that has the blue diamond. Collect the blue diamond, complete the race, and save the game. Vic Viper will be unlocked on the character selection screen.

Magma Castle 1: Shortcut
Cross the first two bridges and the first dirt path. On the second dirt path, instead of making a right to continue, go to the far left and you will find a jump that leads to another dirt path. Jump off the three small jumps, then make a sharp left turn. The finish line will be a few inches away from you.

Unlock Dr. Yang / Ebisumaru:
To unlock Dr. Yang a.k.a. Ebisumaru from the ''Goemon'' / ''Mystical Ninja'' series break the records for both ''Ganbare Dochu''-courses. Again, use Bear Tank as he is the best character to do so.

Unlock King:
To be able to play as King from Pop'n Music, you must find the diamond in the Sky Bridge 2 course Champion Cup, first track. I recommend you have unlocked the Bear Tank, and that you use it to try to get this diamond. Anyway, before the first jump, get a turbo boost from a blue bell. Before the jump, stay to the left, then make a hard right and use the boost just before you hit the jump. If you're lucky, you'll make it onto a hidden island with the diamond on it; take it and King is yours.

Unlock Vic Viper:
To be able to play as Vic Viper, the plane from the Gradius games, you must find the diamond in the Moon Road track Krazy Cup while in grand prix mode. It's HIGHLY recommended you unlock the Bear Tank first, then use it to try and get this one. Anyway, before the first jump be sure to go through a blue bell to have a boost in reserve. Then just before you hit the jump, use the boost and make a hard turn towards the right. With luck, you'll land on a secret island with the diamond. Drive through and you'll gain access to Vic Viper.

How To Be In The "S" Cup:
All you have to do to reach the "S" Cup is to win every Krazy GP up through the "A" Cup then it will unlock the "S" Cup.