A riot! Gameplay-wise, Tetsujin 28 is a very different experience from other robot games, since you control Tetsujin from the hero's perspective. More importantly, it is fun to see it wreak havok in the cities while pulverising the enemy robots.
The language barrier isn't much of an issue, since the story is relatively basic anyway.
If you have played and enjoyed RAD, you will enjoy this too. The game moves at a faster pace, and although the controls are simplified, you can string combo's like: uppercut the enemy into the air, unleash a straight on their way down, and finish up with a charging tackle!
If you like mech games, or want to try something a little different, you owe it to yourself to give this game a go.