The pseudonymous analyst TechDev, known for his macro crypto predictions, has forecasted that the altcoin market is experiencing a “textbook markup,” indicating a potential more than 5x increase during this bull run. Some top altcoins, however, might turn a $500 investment into $50,000 before the bull run ends. Pepe, Rollblock, and Fetch.ai are highlighted as the best choices for such substantial returns.

**Pepe (PEPE) Sets New All-Time High; Analysts Remain Bullish**

Pepe (PEPE) has been a top performer in the 2024 bull market, with its price increasing over 10.5x year-to-date and setting multiple all-time highs, the latest being $0.00001725. Analysts, including Jason Pizzino, remain optimistic about Pepe's potential, citing its strong market structure and investment opportunities.

**Rollblock (RBLK) To Shoot Towards $5 As Support Grows**

Rollblock (RBLK) is touted as the altcoin most likely to turn a $500 investment into $50k this bull cycle. This DeFi project is gaining attention due to its involvement in the rapidly growing online gambling industry, expected to reach $744 billion by 2028. Rollblock’s licensed crypto casino platform promises transparency, data protection, and an easy registration process. The project plans to share up to 30% of its weekly revenue with holders, buying back and burning RBLK tokens, thus creating buying pressure and reducing supply. Currently in its presale phase at $0.012, Rollblock is forecasted to rally to $5, presenting a potential 100x return.

**Fetch.ai (AI) Poised For Parabolic Rise As The AI-Crypto Market Grows**

Fetch.ai (AI) aims to revolutionize the market with decentralized artificial intelligence, enabling users to create and utilize self-governing AI agents. With FET, its native token, priced around $2.25, analysts predict a surge to $50 by the end of this bull market, offering significant gains for investors.

**In Conclusion**

Pepe, Rollblock, and Fetch.ai are among the best cryptos to buy now due to their high growth potential. While FET and PEPE might not achieve a 100x ROI due to their larger market caps, RBLK, with its smaller cap and entry into a massive market, presents a compelling opportunity for such returns.