Hello again! Would you like to see a really cool game?
Let me tell you a story.
But you knew that already.
Purple Tentacle was right: it's fingers and opposable thumbs that maketh the man.
They also made cool 3D rendered space fighters fitted with state-of-the-art weaponry. They were pacifists, so they only built them because they thought they'd look cool. They never thought they'd have to use them...
They're attempting to develop the most capable and deadly creatures in order to destroy the overlynxes and take over the Earth...
Humans are rubbish.
Only one overlynx is hot-headed enough to try and take the fight to the Denebolans directly. He's probably berating himself for parking his fighter so far away from the domed city.
And like most 90s Western horizontally scrolling shoot-'em-ups, that's not its only problem.
The screen scrolls automatically, so it's possible to get yourself trapped in a maze of instant death mines or against a vertical wall because the game doesn't show you which route is the correct one until too late.
When you control your ship, it doesn't move at a fixed speed like the Vic Viper from Gradius. The Interpose ship accelerates and decelerates slowly, causing it to lurch around the screen.
A lot of the enemy waves have a habit of appearing from the left of the screen, and you don't get any rear-facing weapons until some levels in. I had to sell all of the single-use special powerups I acquired just to get the essential up and down firing weapons to a usable level.
Auto-fire is a temporary power up that can be picked up or bought; you will need a new keyboard after playing Interpose unless you never buy anything but auto-fires. You can't go back and replay levels for more money, so you'd better choose your items carefully.
When you die it's back to the last shop, which is a couple of minutes away. You don't get back any single use weapons you wasted and the enemies you re-encounter between the last shop and the boss don't drop any cash. And you lose a level of cannon powerup. Hurrah.
If I'm going to be super mega honest, I think Interpose is a boring game. I love the scenario and the cutscenes are very well done but I just don't like shmups that much. I just wanted to see the intro again. The music is pretty cool too! I've had the menu music in my head since I first played the game over a decade ago. (YouTube link)
Interpose was made with care and attention by people who knew what they were doing. Every problem with the game is due to it being a low-resolution nineties horizontal shmup.
The key difference is that low-resolution nineties horizontal shmups like Xenon 2: Megablast and Blood Money are both ugly, boring crap that isn't worth your time. Interpose is friendly, charming crap that every home should own.