Lots, which is to be expected seeing as it's pretty much Resident Evil with dinosaurs.
- Really, just the concept of the series is enough to make you weary of playing it (especially the first game) if you find movies like Jurassic Park scary. Unlike its sister series where the zombies, while scary and you certainly don’t want them to get close to you, are ultimately slow, dumb and are easy to take out with some well-aimed shots at their brains, this one has friggin’ Velociraptors as its main enemies, which are fully aware, smart and FAST animals who come sprinting at you like Nemesis, are unpredictable, hunt in packs, can ambush you and drain your health with just a few slashes and are HARD to kill with just your dinky handgun. Doubly so with the Tyrannosaurus, a massive and implacable man-eating beast who makes Tyrants look like common mooks. There’s a reason why the most recommended strategy when dealing with them is simple: Run.
- Perhaps the scariest part is in the second game, which sees you putting on a diver's suit and making your way through a claustrophobic flooded base that's filled to the brim with Mosasaurus, which are basically crocodiles with fins, and the divesuit clad corpses of a couple of unlucky workers. The music really doesn't help.
- The scene where the laboratory workers get eaten by the T. rex in the first game. We don't see what happens to them, but Regina overhears the screams and subsequent chewing sounds over the intercom. Just imagine what those guys' last moments were like: Trapped in an enclosed space with a giant predator, nowhere to run and no way to fight back...
- The woman found near the Third Energy Generator is still breathing when you find her. You turn your back for a while and go into the next room. A while later you hear a shot. You rush back in. There are bloodstains on the panel behind her and she is now dead. It turns out dinosaurs are not your only problem.
- The Therizinosaurus: the Therizinosaurus in this game was a result of Science Marches On, when all we knew of the genus was a pair of large arms tipped with gigantic curved claws. Capcom basically put in the game what they felt a carnivorous Therizinosaurus would look like. The result is a terrifying, coal black, nine-foot tall bear-like dinosaur that one strategy guide described as "the raptor's inbred cousin from the Ozarks". It's a walking tank that absorbs ridiculous amounts of gunfire with massive thresher blade-tipped arms that loves to knock Regina to the floor, then stamp on her head if she does not get up fast enough.
- The first encounter with the T. rex in the first game is done in a spectacularly frightening way. Just as you turn to leave an office with a large window, likely not knowing that you have triggered anything at all, a head the size of a Volkswagen crashes through that window, snatches the corpse of a scientist and then the game throws you right into your first boss fight after giving you just enough time to realize what is going on.
- Regina CAN choose to fight here, but given how stingy the first game could be with anything stronger than your pitiful handgun, which is hardly appropriate firepower for freaking dinosaurs, it's more resourcefully economic to run past the T. rex and out the door when it withdraws its head. Unfortunately, choosing to do that is its own brand of horror since you basically have to brush alongside its nose just to get past it, and that gives it PLENTY of opportunity to chomp you...
- The third game has the introduction to the Australis (the game's mutated T. rex). Recently rescued Mc Coy notices something fall on him and looks up...at which point the Australis chomps down on him, messy mutilating him as he screams in agony and the tossing his body aside. Fortunately for Patrick and Sonya, the Australis is slain by a swarm of Rigels...who proceed to burrow in and out of the massive dinosaur's body.
- The Giganotosaurus from the second game, for three reasons, as stated below.
- First of all, it's much larger than the T.rex, both in length and height, with its jaws being large enough to swallow a human in one bite. In its first appearance, it completely shrugs off a bite to the leg by the T.rex, which should be noted as having one of the strongest bites in the animal kingdom, and is so massive and so strong that it's even able to pick up the T.rex in its jaws and throw it across the compound before killing it. That's right: the mighty T.rex, which was thought to be unkillable, is utterly curbstomped by this behemoth. Even scarier if you think back to the first game, where your weapons were less powerful and the dinosaurs were harder to kill; imagine something like this thing running around, bigger and stronger than the already invincible T.rex.
- Second, like the T.rex, none of your weapons can kill it, and it can only be brought down through special means. Regina is able to knock it out with several giant bursts of fire to its face, but this only lasts for minutes before it gets up again. It's then temporarily incapacitated when its rampage causes a huge missile to fall next to it and explode, but even this fails to kill the Giganotosaurus. It's only when Dylan uses a Kill Sat at the end of the game to completely obliterate it that it's Killed Off for Real.
- Finally, the Dino File states that the existence of the Giganotosaurus was merely a rumor among the soldiers, and that anybody who had gone out looking for the beast was never seen again; therefore, no one was able to actually confirm that it even existed. It's both amazing and unnerving that, despite its absolutely colossal size, it somehow managed to stay hidden from the survivors of the future world for so long.
- While Dino Stalker focuses a lot more on action than terror, there are still some unnerving moments to be found. Most of them come from the massive pitch-black T.rex: not only does it look bigger than the other T.rexes from the series, it's much tougher as well. The T.rexes from the previous games were incredibly durable as well, but this monstrosity is able to resist multiple rockets shot straight at it's face without even dropping the tiniest amount of blood. Then there's it's roar; it just sounds completely unnatural and demonic. While it only appears twice in the entire game, it definitely makes a memorable impression.
- The first encounter with it happens in the fifth stage. It shows up abruptly and effortlessly kills one of the Carnotaurus, who up until this point were the biggest and among the deadliest dinosaurs hunting Mike and Paula. They don't even bother to fight it, opting to retreat as soon as they hear it's roar. This beast also appears to have something against humans, as it immediately gives chase to Mike and Paula despite the fact that it just killed a dinosaur that could keep it fed for a while.
- The second encounter happens in the innards of a volcano where the Mother Computer is located. The fight is divided in two parts; in the first, the T.rex is no more angry than all the other dinosaurs fought so far. After you beat the first round and injure it, however? It completely flips out. It becomes much more relentless and agressive in it's attacks, unleashing one after the other. The volcano also starts to awaken during this part, which gives the area a truly hellish look. The erupting lava and the angered roars of the beast almost makes it seem that you're fighting Satan himself instead of a dinosaur.
- One of the attacks the T. rex gains in this phase is one where it grabs Mike in it's jaws, shakes him around a bit and then drops him with a bite. It's scary enough on it's own, but it gets even worse when you stop to think a bit: the T. rex had an extremely powerful bite force, and the game had shown it killing one of the Carnotaurus earlier with a single bite. It should be able to instantly kill Mike with this move, and maybe the reason it doesn't... is because it doesn't want to. It's so pissed off that it doesn't want to simply kill Mike quickly; it wants to take it's sweet time and make him suffer.
- When Dylan and Regina regroup at the boat, they discover that someone destroyed the time gate, effectively stranding them in the past. While the two of them do manage to find another time gate near the end of the game, it had to be incredibly chilling to know that they could have been stuck in the dinosaur age with very limited resources on hand to survive with.
- In the second game, when exploring the Control Shack at the Research Facility, you find a file talking about how to get rid of the poisonous plants that contains a photograph of said plants
◊. Due to the heavy compression and blurriness, the photograph comes across as rather creepy and ominous, like it was taken in a hurry due to how dense the air is because of the poison. The fact that it looks like a real photograph (probably of some miniature models) doesn’t help.
